Numerics

Revision 1.63

Red denotes a conflicting numeric definition, gray for deprecated (however quite possibly still in use), and blue for OK.

<client> indicates the nickname of the client who is receiving this message, which is present as the first parameter of most numerics. If the client is not registered yet, <client> is usually the character "*"

# Name Origin Format Comments
001 RPL_WELCOME RFC2812 <client> :Welcome to the Internet Relay Network <nick>!<user>@<host> The first message sent after client registration. The text used varies widely
002 RPL_YOURHOST RFC2812 <client> :Your host is <servername>, running version <version> Part of the post-registration greeting. Text varies widely. Also known as RPL_YOURHOSTIS (InspIRCd v2)
003 RPL_CREATED RFC2812 <client> :This server was created <date> Part of the post-registration greeting. Text varies widely and <date> is returned in a human-readable format. Also known as RPL_SERVERCREATED (InspIRCd v2)
004 RPL_MYINFO RFC2812 <client> <server_name> <version> <usermodes> <chanmodes> [chanmodes_with_a_parameter] Part of the post-registration greeting. Also known as RPL_SERVERVERSION (InspIRCd v2)
005 RPL_BOUNCE RFC2812 <client> :Try server <server_name>, port <port_number> Sent by the server to a user to suggest an alternative server, sometimes used when the connection is refused because the server is already full. Also known as RPL_SLINE (AustHex), and RPL_REDIR

Also see RPL_BOUNCE (010).
005 RPL_ISUPPORT <client> <1-13 tokens> :are supported by this server Advertises features, limits, and protocol options that clients should be aware of. Also known as RPL_PROTOCTL (Bahamut, Unreal, Ultimate)

Also see RPL_REMOTEISUPPORT (105).
006 RPL_MAP Unreal
007 RPL_MAPEND Unreal Also known as RPL_ENDMAP (InspIRCd)
008 RPL_SNOMASK ircu Server notice mask (hex). Also known as RPL_SNOMASKIS (InspIRCd)
009 RPL_STATMEMTOT ircu
010 RPL_BOUNCE <client> <hostname> <port> :<info> Sent to the client to redirect it to another server. Also known as RPL_REDIR
010 RPL_STATMEM ircu
014 RPL_YOURCOOKIE Hybrid?
015 RPL_MAP ircu
016 RPL_MAPMORE ircu
017 RPL_MAPEND ircu Also known as RPL_ENDMAP (InspIRCd)
018 RPL_MAPUSERS InspIRCd <client> :<count> servers and <count> users, average <average count> users per server
020 RPL_HELLO rusnet-ircd <client> :<info> Used by Rusnet to send the initial "Please wait while we process your connection" message, rather than a server-sent NOTICE.
030 RPL_APASSWARN_SET ircu
031 RPL_APASSWARN_SECRET ircu
032 RPL_APASSWARN_CLEAR ircu
042 RPL_YOURID IRCnet Also known as RPL_YOURUUID (InspIRCd)
043 RPL_SAVENICK IRCnet <client> <newnick> :<info> Sent to the client when their nickname was forced to change due to a collision
050 RPL_ATTEMPTINGJUNC aircd
051 RPL_ATTEMPTINGREROUTE aircd
105 RPL_REMOTEISUPPORT Unreal Same format as RPL_ISUPPORT, but returned when the client is requesting information from a remote server instead of the server it is currently connected to

Also see RPL_ISUPPORT (005).
201 RPL_TRACECONNECTING RFC1459 <client> Try. <class> <server> See RFC
202 RPL_TRACEHANDSHAKE RFC1459 <client> H.S. <class> <server> See RFC
203 RPL_TRACEUNKNOWN RFC1459 <client> ???? <class> [<connection_address>] See RFC
204 RPL_TRACEOPERATOR RFC1459 <client> Oper <class> <nick> See RFC
205 RPL_TRACEUSER RFC1459 <client> User <class> <nick> See RFC
206 RPL_TRACESERVER RFC1459 <client> Serv <class> <int>S <int>C <server> <nick!user|*!*>@<host|server> [V<protocol_version>] See RFC
207 RPL_TRACESERVICE RFC2812 <client> Service <class> <name> <type> <active_type> See RFC
208 RPL_TRACENEWTYPE RFC1459 <client> <newtype> 0 <client_name> See RFC
209 RPL_TRACECLASS RFC2812 <client> Class <class> <count> See RFC
210 RPL_TRACERECONNECT RFC2812
210 RPL_STATS aircd Used instead of having multiple stats numerics
210 RPL_STATSHELP Unreal Used to send lists of stats flags and other help information.
211 RPL_STATSLINKINFO RFC1459 <client> <linkname> <sendq> <sent_msgs> <sent_bytes> <recvd_msgs> <rcvd_bytes> <time_open> Reply to STATS (See RFC)
212 RPL_STATSCOMMANDS RFC1459 <client> <command> <count> [<byte_count> <remote_count>] Reply to STATS (See RFC)
213 RPL_STATSCLINE RFC1459 <client> C <host> * <name> <port> <class> Reply to STATS (See RFC)
214 RPL_STATSNLINE RFC1459 <client> N <host> * <name> <port> <class> Reply to STATS (See RFC), Also known as RPL_STATSOLDNLINE (ircu, Unreal)
215 RPL_STATSILINE RFC1459 <client> I <host> * <host> <port> <class> Reply to STATS (See RFC)
216 RPL_STATSKLINE RFC1459 <client> K <host> * <username> <port> <class> Reply to STATS (See RFC)
217 RPL_STATSQLINE RFC1459
217 RPL_STATSPLINE ircu
218 RPL_STATSYLINE RFC1459 <client> Y <class> <ping_freq> <connect_freq> <max_sendq> Reply to STATS (See RFC)
219 RPL_ENDOFSTATS RFC1459 <client> <query> :<info> End of RPL_STATS* list.
220 RPL_STATSPLINE Hybrid
220 RPL_STATSBLINE Bahamut, Unreal
220 RPL_STATSWLINE Nefarious
221 RPL_UMODEIS RFC1459 <client> <user_modes> [<user_mode_params>] Information about a user's own modes. Some daemons have extended the mode command and certain modes take parameters (like channel modes).
222 RPL_MODLIST
222 RPL_SQLINE_NICK Unreal
222 RPL_STATSBLINE Bahamut
222 RPL_STATSJLINE ircu
222 RPL_CODEPAGE rusnet-ircd
223 RPL_STATSELINE Bahamut
223 RPL_STATSGLINE Unreal
223 RPL_CHARSET rusnet-ircd
224 RPL_STATSFLINE Hybrid, Bahamut
224 RPL_STATSTLINE Unreal
225 RPL_STATSDLINE Hybrid
225 RPL_STATSCLONE Bahamut
225 RPL_STATSZLINE Bahamut
225 RPL_STATSELINE Unreal
226 RPL_STATSCOUNT Bahamut
226 RPL_STATSALINE Hybrid
226 RPL_STATSNLINE Unreal
227 RPL_STATSGLINE Bahamut
227 RPL_STATSVLINE Unreal
227 RPL_STATSBLINE Rizon Returns details about active DNS blacklists and hits.
228 RPL_STATSQLINE ircu
228 RPL_STATSBANVER Unreal
229 RPL_STATSSPAMF Unreal
230 RPL_STATSEXCEPTTKL Unreal
231 RPL_SERVICEINFO RFC1459
232 RPL_ENDOFSERVICES RFC1459
232 RPL_RULES Unreal
233 RPL_SERVICE RFC1459
234 RPL_SERVLIST RFC2812 <client> <name> <server> <mask> <type> <hopcount> <info> A service entry in the service list
235 RPL_SERVLISTEND RFC2812 <client> <mask> <type> :<info> Termination of an RPL_SERVLIST list
236 RPL_STATSVERBOSE ircu Verbose server list?
237 RPL_STATSENGINE ircu Engine name?
238 RPL_STATSFLINE ircu Feature lines?
239 RPL_STATSIAUTH IRCnet
240 RPL_STATSVLINE RFC2812
240 RPL_STATSXLINE AustHex
241 RPL_STATSLLINE RFC1459 <client> L <hostmask> * <servername> <maxdepth> Reply to STATS (See RFC)
242 RPL_STATSUPTIME RFC1459 <client> :Server Up <days> days <hours>:<minutes>:<seconds> Reply to STATS (See RFC)
243 RPL_STATSOLINE RFC1459 <client> O <hostmask> * <opername> [<privileges>] <class> Reply to STATS O (See RFC); The privileges field is an extension in some IRC daemons, which returns either the name of a set of privileges, or a set of privileges. The class extension field returns which connection class the o-line applies to (this is also know to be placeholders like "0" and "-1" when inapplicable.) ircu doesn't have the privileges field and irc2 uses it to display which port, if any, the oper is restricted to.
244 RPL_STATSHLINE RFC1459 <client> H <hostmask> * <servername> Reply to STATS (See RFC)
245 RPL_STATSSLINE Bahamut, IRCnet, Hybrid
245 RPL_STATSTLINE Hybrid?
246 RPL_STATSPING RFC2812
246 RPL_STATSSERVICE Hybrid
246 RPL_STATSTLINE ircu
246 RPL_STATSULINE Hybrid
247 RPL_STATSBLINE RFC2812
247 RPL_STATSXLINE Hybrid, PTlink, Unreal
247 RPL_STATSGLINE ircu
248 RPL_STATSULINE ircu
248 RPL_STATSDEFINE IRCnet
249 RPL_STATSULINE Extension to RFC1459?
249 RPL_STATSDEBUG Hybrid
250 RPL_STATSDLINE RFC2812
250 RPL_STATSCONN ircu, Unreal
251 RPL_LUSERCLIENT RFC1459 <client> :There are <int> users and <int> invisible on <int> servers Reply to LUSERS command, other versions exist (eg. RFC2812); Text may vary.
252 RPL_LUSEROP RFC1459 <client> <int> :operator(s) online Reply to LUSERS command - Number of IRC operators online
253 RPL_LUSERUNKNOWN RFC1459 <client> <int> :unknown connection(s) Reply to LUSERS command - Number of connections in an unknown/unregistered state
254 RPL_LUSERCHANNELS RFC1459 <client> <int> :channels formed Reply to LUSERS command - Number of channels formed
255 RPL_LUSERME RFC1459 <client> :I have <int> clients and <int> servers Reply to LUSERS command - Information about local connections; Text may vary.
256 RPL_ADMINME RFC1459 <client> <server> :Administrative info Start of an RPL_ADMIN* reply. In practice, the server parameter is often never given, and instead the last parameter contains the text 'Administrative info about <server>'. Newer daemons seem to follow the RFC and output the server's hostname in the last parameter, but also output the server name in the text as per traditional daemons.
257 RPL_ADMINLOC1 RFC1459 <client> :<admin_location> Reply to ADMIN command (Location, first line)
258 RPL_ADMINLOC2 RFC1459 <client> :<admin_location> Reply to ADMIN command (Location, second line)
259 RPL_ADMINEMAIL RFC1459 <client> :<email_address> Reply to ADMIN command (E-mail address of administrator)
261 RPL_TRACELOG RFC1459 <client> File <logfile> <debug_level> See RFC
262 RPL_TRACEPING Extension to RFC1459?
262 RPL_TRACEEND RFC2812 <client> <server_name> <version>[.<debug_level>] :<info> Used to terminate a list of RPL_TRACE* replies. Also known as RPL_ENDOFTRACE
263 RPL_TRYAGAIN RFC2812 <client> <command> :Please wait a while and try again. When a server drops a command without processing it, it MUST use this reply. The last parameter text changes, and commonly provides the client with more information about why the command could not be processed (such as rate-limiting). Also known as RPL_LOAD_THROTTLED and RPL_LOAD2HI, I'm presuming they do the same thing.
264 RPL_USINGSSL rusnet-ircd
265 RPL_LOCALUSERS aircd, Hybrid, Bahamut <client> [<u> <m>] :Current local users <u>, max <m> Returns the number of clients currently and the maximum number of clients that have been connected directly to this server at one time, respectively. The two optional parameters are not always provided. Also known as RPL_CURRENT_LOCAL
266 RPL_GLOBALUSERS aircd, Hybrid, Bahamut <client> [<u> <m>] :Current global users <u>, max <m> Returns the number of clients currently connected to the network, and the maximum number of clients ever connected to the network at one time, respectively. Also known as RPL_CURRENT_GLOBAL
267 RPL_START_NETSTAT aircd
268 RPL_NETSTAT aircd
269 RPL_END_NETSTAT aircd
270 RPL_PRIVS ircu
270 RPL_MAPUSERS InspIRCd 2.0 <client> :<count> servers and <count> users, average <average count> users per server Moved to 018 in InspIRCd 3.0
271 RPL_SILELIST ircu
272 RPL_ENDOFSILELIST ircu
273 RPL_NOTIFY aircd
274 RPL_ENDNOTIFY aircd
274 RPL_STATSDELTA IRCnet
275 RPL_STATSDLINE ircu, Ultimate
275 RPL_USINGSSL Bahamut <client> <nick> :is using a secure connection (SSL)
276 RPL_WHOISCERTFP oftc-hybrid <client> <nick> :has client certificate fingerprint <fingerprint> Shows the SSL/TLS certificate fingerprint used by the client with the given nickname. Only sent when users `"WHOIS"` themselves or when an operator sends the `"WHOIS"`. Also adopted by hybrid 8.1 and charybdis 3.2
276 RPL_STATSRLINE ircu
276 RPL_VCHANEXIST Hybrid Gone from hybrid 7.1 (2003)
277 RPL_VCHANLIST Hybrid Gone from hybrid 7.1 (2003)
278 RPL_VCHANHELP Hybrid 7.0? Gone from hybrid 7.1 (2003)
280 RPL_GLIST ircu
281 RPL_ENDOFGLIST ircu
281 RPL_ACCEPTLIST
282 RPL_ENDOFACCEPT
282 RPL_JUPELIST ircu
283 RPL_ALIST
283 RPL_ENDOFJUPELIST ircu
284 RPL_ENDOFALIST
284 RPL_FEATURE ircu
285 RPL_GLIST_HASH
285 RPL_CHANINFO_HANDLE aircd
285 RPL_NEWHOSTIS QuakeNet
286 RPL_CHANINFO_USERS aircd
286 RPL_CHKHEAD QuakeNet
287 RPL_CHANINFO_CHOPS aircd
287 RPL_CHANUSER QuakeNet
288 RPL_CHANINFO_VOICES aircd
288 RPL_PATCHHEAD QuakeNet
289 RPL_CHANINFO_AWAY aircd
289 RPL_PATCHCON QuakeNet
290 RPL_CHANINFO_OPERS aircd
290 RPL_HELPHDR Unreal
290 RPL_DATASTR QuakeNet
291 RPL_CHANINFO_BANNED aircd
291 RPL_HELPOP Unreal
291 RPL_ENDOFCHECK QuakeNet
292 RPL_CHANINFO_BANS aircd
292 RPL_HELPTLR Unreal
292 ERR_SEARCHNOMATCH Nefarious
293 RPL_CHANINFO_INVITE aircd
293 RPL_HELPHLP Unreal
294 RPL_CHANINFO_INVITES aircd
294 RPL_HELPFWD Unreal
295 RPL_CHANINFO_KICK aircd
295 RPL_HELPIGN Unreal
296 RPL_CHANINFO_KICKS aircd
299 RPL_END_CHANINFO aircd
300 RPL_NONE RFC1459 Dummy reply, supposedly only used for debugging/testing new features, however has appeared in production daemons.
301 RPL_AWAY RFC1459 <client> <nick> :<message> Used in reply to a command directed at a user who is marked as away
302 RPL_USERHOST RFC1459 <client> :*1<reply> *( ' ' <reply> ) Reply used by USERHOST (see RFC)
303 RPL_ISON RFC1459 <client> :*1<nick> *( ' ' <nick> ) Reply to the ISON command (see RFC)
304 RPL_TEXT irc2? <client> :<text> Displays text to the user. This seems to have been defined in irc2.7h but never used. Servers generally use specific numerics or server notices instead of this. Unreal uses this numeric, but most others don't use it
305 RPL_UNAWAY RFC1459 <client> :<info> Reply from AWAY when no longer marked as away
306 RPL_NOWAWAY RFC1459 <client> :<info> Reply from AWAY when marked away
307 RPL_USERIP
307 RPL_WHOISREGNICK Bahamut, Unreal
307 RPL_SUSERHOST AustHex
308 RPL_NOTIFYACTION aircd
308 RPL_WHOISADMIN Bahamut
308 RPL_RULESSTART Unreal Also known as RPL_RULESTART (InspIRCd)
309 RPL_NICKTRACE aircd
309 RPL_WHOISSADMIN Bahamut
309 RPL_ENDOFRULES Unreal Also known as RPL_RULESEND (InspIRCd)
309 RPL_WHOISHELPER AustHex
309 RPL_WHOISSERVICE oftc-hybrid Reply to WHOIS - Client is a Network Service
310 RPL_WHOISSVCMSG Bahamut
310 RPL_WHOISHELPOP Unreal
310 RPL_WHOISSERVICE AustHex
311 RPL_WHOISUSER RFC1459 <client> <nick> <user> <host> * :<real_name> Reply to WHOIS - Information about the user
312 RPL_WHOISSERVER RFC1459 <client> <nick> <server> :<server_info> Reply to WHOIS - What server they're on
313 RPL_WHOISOPERATOR RFC1459 <client> <nick> :<privileges> Reply to WHOIS - User has IRC Operator privileges
314 RPL_WHOWASUSER RFC1459 <client> <nick> <user> <host> * :<real_name> Reply to WHOWAS - Information about the user
315 RPL_ENDOFWHO RFC1459 <client> <name> :<info> Used to terminate a list of RPL_WHOREPLY replies
316 RPL_WHOISPRIVDEAF Nefarious
316 RPL_WHOISCHANOP RFC1459 This numeric was reserved, but never actually used. The source code notes "redundant and not needed but reserved"
317 RPL_WHOISIDLE RFC1459 <client> <nick> <seconds> :seconds idle Reply to WHOIS - Idle information
318 RPL_ENDOFWHOIS RFC1459 <client> <nick> :<info> Reply to WHOIS - End of list
319 RPL_WHOISCHANNELS RFC1459 <client> <nick> :*( ( '@' / '+' ) <channel> ' ' ) Reply to WHOIS - Channel list for user (See RFC)
320 RPL_WHOISVIRT AustHex
320 RPL_WHOIS_HIDDEN Anothernet
320 RPL_WHOISSPECIAL Unreal
321 RPL_LISTSTART RFC1459 <client> Channels :Users Name Channel list - Header
322 RPL_LIST RFC1459 <client> <channel> <#_visible> :<topic> Channel list - A channel
323 RPL_LISTEND RFC1459 <client> :<info> Channel list - End of list
324 RPL_CHANNELMODEIS RFC1459 <client> <channel> <mode> <mode_params>
325 RPL_UNIQOPIS RFC2812 <client> <channel> <nickname>
325 RPL_CHANNELPASSIS
325 RPL_WHOISWEBIRC Nefarious
325 RPL_CHANNELMLOCKIS sorircd <client> <nick> <channel> <modeletters> :is the current channel mode-lock Defined in header file in charybdis, but never used. Also known as RPL_CHANNELMLOCK.
326 RPL_NOCHANPASS
327 RPL_CHPASSUNKNOWN
327 RPL_WHOISHOST rusnet-ircd
328 RPL_CHANNEL_URL Bahamut, AustHex Also known as RPL_CHANNELURL in charybdis
329 RPL_CREATIONTIME Bahamut Also known as RPL_CHANNELCREATED (InspIRCd)
330 RPL_WHOWAS_TIME
330 RPL_WHOISACCOUNT ircu <client> <nick> <authname> :<info> Also known as RPL_WHOISLOGGEDIN (ratbox?, charybdis)
331 RPL_NOTOPIC RFC1459 <client> <channel> :<info> Response to TOPIC when no topic is set. Also known as RPL_NOTOPICSET (InspIRCd)
332 RPL_TOPIC RFC1459 <client> <channel> :<topic> Response to TOPIC with the set topic. Also known as RPL_TOPICSET (InspIRCd)
333 RPL_TOPICWHOTIME ircu Also known as RPL_TOPICTIME (InspIRCd).
334 RPL_LISTUSAGE ircu
334 RPL_COMMANDSYNTAX Bahamut
334 RPL_LISTSYNTAX Unreal
335 RPL_WHOISBOT Unreal
335 RPL_WHOISTEXT Hybrid Since hybrid 8.2.0
335 RPL_WHOISACCOUNTONLY Nefarious
336 RPL_INVITELIST Hybrid <client> :<channel> Since hybrid 8.2.0. Not to be confused with the more widely used 346. A "list of channels a client is invited to" sent with /INVITE
336 RPL_WHOISBOT Nefarious
337 RPL_ENDOFINVITELIST Hybrid <client> :End of /INVITE list. Since hybrid 8.2.0. Not to be confused with the more widely used 347.
337 RPL_WHOISTEXT Hybrid? Before hybrid 8.2.0, for "User connected using a webirc gateway". Since charybdis 3.4.0 for "Underlying IPv4 is %s".
338 RPL_CHANPASSOK
338 RPL_WHOISACTUALLY ircu, Bahamut
339 RPL_BADCHANPASS
339 RPL_WHOISMARKS Nefarious
340 RPL_USERIP ircu
341 RPL_INVITING RFC1459 <client> <nick> <channel> Returned by the server to indicate that the attempted INVITE message was successful and is being passed onto the end client. Note that RFC1459 documents the parameters in the reverse order. The format given here is the format used on production servers, and should be considered the standard reply above that given by RFC1459.
342 RPL_SUMMONING RFC1459 <client> <user> :<info> Returned by a server answering a SUMMON message to indicate that it is summoning that user
343 RPL_WHOISKILL Nefarious
344 RPL_WHOISCOUNTRY InspIRCd 2.0 <client> <nick> :is connected from <country> <country code> Used by the third-party m_geoipban InspIRCd module.
344 RPL_WHOISCOUNTRY InspIRCd 3.0 <client> <nick> <country code> :is connecting from <country> Used by InspIRCd's m_geoban module.
344 RPL_REOPLIST IRCnet <client> <channel> <mask> MODE +R query
345 RPL_INVITED GameSurge <client> <channel> <user being invited> <user issuing invite> :<user being invited> has been invited by <user issuing invite> Sent to users on a channel when an INVITE command has been issued. Also known as RPL_ISSUEDINVITE (ircu)
345 RPL_ENDOFREOPLIST IRCnet <client> <channel>: :End of Channel Reop List MODE +R query
346 RPL_INVITELIST RFC2812 <client> <channel> <invitemask> An invite mask for the invite mask list. Also known as RPL_INVEXLIST in hybrid 8.2.0
347 RPL_ENDOFINVITELIST RFC2812 <client> <channel> :<info> Termination of an RPL_INVITELIST list. Also known as RPL_ENDOFINVEXLIST in hybrid 8.2.0
348 RPL_EXCEPTLIST RFC2812 <client> <channel> <exceptionmask> [<who> <set-ts>] An exception mask for the exception mask list. Also known as RPL_EXLIST (Unreal, Ultimate). Bahamut calls this RPL_EXEMPTLIST and adds the last two optional params, <who> being either the nickmask of the client that set the exception or the server name, and <set-ts> being a unix timestamp representing when it was set.
349 RPL_ENDOFEXCEPTLIST RFC2812 <client> <channel> :<info> Termination of an RPL_EXCEPTLIST list. Also known as RPL_ENDOFEXLIST (Unreal, Ultimate) or RPL_ENDOFEXEMPTLIST (Bahamut).
350 RPL_WHOISGATEWAY InspIRCd 3.0 <client> <real host> <real ip> :is connecting via {the <name> WebIRC, an ident} gateway Used by InspIRCd's m_cgiirc module.
351 RPL_VERSION RFC1459 <client> <version> <server> :<comments> Reply by the server showing its version details, however this format is not often adhered to
352 RPL_WHOREPLY RFC1459 <client> <channel> <user> <host> <server> <nick> <H|G>[*][@|+] :<hopcount> <real_name> Reply to vanilla WHO (See RFC). This format can be very different if the 'WHOX' version of the command is used (see ircu).
353 RPL_NAMREPLY RFC1459 <client> ( '=' / '*' / '@' ) <channel> ' ' : [ '@' / '+' ] <nick> *( ' ' [ '@' / '+' ] <nick> ) Reply to NAMES (See RFC)
354 RPL_WHOSPCRPL ircu Reply to WHO, however it is a 'special' reply because it is returned using a non-standard (non-RFC1459) format. The format is dictated by the command given by the user, and can vary widely. When this is used, the WHO command was invoked in its 'extended' form, as announced by the 'WHOX' ISUPPORT tag. Also known as RPL_RWHOREPLY (Bahamut).
355 RPL_NAMREPLY_ QuakeNet <client> ( '=' / '*' / '@' ) <channel> ' ' : [ '@' / '+' ] <nick> *( ' ' [ '@' / '+' ] <nick> ) Reply to the \users (when the channel is set +D, QuakeNet relative). The proper define name for this numeric is unknown at this time. Also known as RPL_DELNAMREPLY (ircu)

Also see RPL_NAMREPLY (353).
357 RPL_MAP AustHex
358 RPL_MAPMORE AustHex
359 RPL_MAPEND AustHex
360 RPL_WHOWASREAL Charybdis Defined in header file, but never used. Initially introduced in charybdis 2.1 behind `"#if 0"`, with the other side using RPL_WHOISACTUALLY
361 RPL_KILLDONE RFC1459
362 RPL_CLOSING RFC1459
363 RPL_CLOSEEND RFC1459
366 RPL_ENDOFNAMES RFC1459 <client> <channel> :<info> Termination of an RPL_NAMREPLY list
367 RPL_BANLIST RFC1459 <client> <channel> <banid> [[<setter> <time_left>|<time_left> :<reason>]] A ban-list item (See RFC); <setter>, <time left> and <reason> are additions used by various servers.
368 RPL_ENDOFBANLIST RFC1459 <client> <channel> :<info> Termination of an RPL_BANLIST list
369 RPL_ENDOFWHOWAS RFC1459 <client> <nick> :<info> Reply to WHOWAS - End of list
371 RPL_INFO RFC1459 <client> :<string> Reply to INFO
372 RPL_MOTD RFC1459 <client> :- <string> Reply to MOTD
373 RPL_INFOSTART RFC1459
374 RPL_ENDOFINFO RFC1459 <client> :<info> Termination of an RPL_INFO list
375 RPL_MOTDSTART RFC1459 <client> :- <server> Message of the day - Start of an RPL_MOTD list
376 RPL_ENDOFMOTD RFC1459 <client> :<info> Termination of an RPL_MOTD list
377 RPL_KICKEXPIRED aircd
377 RPL_SPAM AustHex <client> :<text> Used during the connection (after MOTD) to announce the network policy on spam and privacy. Supposedly now obsoleted in favor of using NOTICE.
378 RPL_BANEXPIRED aircd
378 RPL_WHOISHOST Unreal
378 RPL_MOTD AustHex Used by AustHex to 'force' the display of the MOTD, however is considered obsolete due to client/script awareness & ability to display the MOTD regardless.

Also see RPL_MOTD (372).
379 RPL_KICKLINKED aircd
379 RPL_WHOISMODES Unreal
379 RPL_WHOWASIP InspIRCd 2.0 <client> <nick> :was connecting from <host> Moved to 652 in InspIRCd 3.0
380 RPL_BANLINKED aircd
380 RPL_YOURHELPER AustHex
381 RPL_YOUREOPER RFC1459 <client> :<info> Successful reply from OPER. Also known as RPL_YOUAREOPER (InspIRCd)
382 RPL_REHASHING RFC1459 <client> <config_file> :<info> Successful reply from REHASH
383 RPL_YOURESERVICE RFC2812 <client> :You are service <service_name> Sent upon successful registration of a service
384 RPL_MYPORTIS RFC1459
385 RPL_NOTOPERANYMORE AustHex, Hybrid, Unreal
386 RPL_QLIST Unreal
386 RPL_IRCOPS Ultimate
386 RPL_IRCOPSHEADER Nefarious
386 RPL_RSACHALLENGE Hybrid :* Used by Hybrid's old OpenSSL OPER CHALLENGE response. This has been obsoleted in favor of SSL cert fingerprinting in oper blocks
387 RPL_ENDOFQLIST Unreal
387 RPL_ENDOFIRCOPS Ultimate
387 RPL_IRCOPS Nefarious
388 RPL_ALIST Unreal
388 RPL_ENDOFIRCOPS Nefarious
389 RPL_ENDOFALIST Unreal
391 RPL_TIME RFC1459 <client> <server> :<time string> Response to the TIME command. The string format may vary greatly.
391 RPL_TIME ircu <client> <server> <timestamp> <offset> :<time string> This extension adds the timestamp and timestamp-offset information for clients.
391 RPL_TIME bdq-ircd <client> <server> <timezone name> <microseconds> :<time string> Timezone name is acronym style (eg. 'EST', 'PST' etc). The microseconds field is the number of microseconds since the UNIX epoch, however it is relative to the local timezone of the server. The timezone field is ambiguous, since it only appears to include American zones.
391 RPL_TIME <client> <server> <year> <month> <day> <hour> <minute> <second> Yet another variation, including the time broken down into its components. Time is supposedly relative to UTC.
392 RPL_USERSSTART RFC1459 <client> :UserID Terminal Host Start of an RPL_USERS list
393 RPL_USERS RFC1459 <client> :<username> <ttyline> <hostname> Response to the USERS command (See RFC)
394 RPL_ENDOFUSERS RFC1459 <client> :<info> Termination of an RPL_USERS list
395 RPL_NOUSERS RFC1459 <client> :<info> Reply to USERS when nobody is logged in
396 RPL_VISIBLEHOST Hybrid <client> <hostname> :is now your visible host Also known as RPL_YOURDISPLAYEDHOST (InspIRCd) or RPL_HOSTHIDDEN (ircu, charybdis, Quakenet, Unreal). <hostname> can also be in the form <user@hostname> (Quakenet).
399 RPL_CLONES InspIRCd 3.0 <client> <local-count> <global-count> <cidr-range>
400 ERR_UNKNOWNERROR <client> <command> [<?>] :<info> Sent when an error occurred executing a command, but it is not specifically known why the command could not be executed.
401 ERR_NOSUCHNICK RFC1459 <client> <nick> :<reason> Used to indicate the nickname parameter supplied to a command is currently unused
402 ERR_NOSUCHSERVER RFC1459 <client> <server> :<reason> Used to indicate the server name given currently doesn't exist
403 ERR_NOSUCHCHANNEL RFC1459 <client> <channel> :<reason> Used to indicate the given channel name is invalid, or does not exist
404 ERR_CANNOTSENDTOCHAN RFC1459 <client> <channel> :<reason> Sent to a user who does not have the rights to send a message to a channel
405 ERR_TOOMANYCHANNELS RFC1459 <client> <channel> :<reason> Sent to a user when they have joined the maximum number of allowed channels and they tried to join another channel
406 ERR_WASNOSUCHNICK RFC1459 <client> <nick> :<reason> Returned by WHOWAS to indicate there was no history information for a given nickname
407 ERR_TOOMANYTARGETS RFC1459 <client> <target> :<reason> The given target(s) for a command are ambiguous in that they relate to too many targets
408 ERR_NOSUCHSERVICE RFC2812 <client> <service_name> :<reason> Returned to a client which is attempting to send an SQUERY (or other message) to a service which does not exist
408 ERR_NOCOLORSONCHAN Bahamut
408 ERR_NOCTRLSONCHAN Hybrid <client> <channel> :You cannot use control codes on this channel. Not sent: <text>
409 ERR_NOORIGIN RFC1459 <client> :<reason> PING or PONG message missing the originator parameter which is required since these commands must work without valid prefixes
410 ERR_INVALIDCAPCMD Undernet? <client> <badcmd> :Invalid CAP subcommand Returned when a client sends a CAP subcommand which is invalid or otherwise issues an invalid CAP command. Also known as ERR_INVALIDCAPSUBCOMMAND (InspIRCd) or ERR_UNKNOWNCAPCMD (ircu)
411 ERR_NORECIPIENT RFC1459 <client> :<reason> Returned when no recipient is given with a command
412 ERR_NOTEXTTOSEND RFC1459 <client> :<reason> Returned when NOTICE/PRIVMSG is used with no message given
413 ERR_NOTOPLEVEL RFC1459 <client> <mask> :<reason> Used when a message is being sent to a mask without being limited to a top-level domain (i.e. * instead of *.au)
414 ERR_WILDTOPLEVEL RFC1459 <client> <mask> :<reason> Used when a message is being sent to a mask with a wild-card for a top level domain (i.e. *.*)
415 ERR_BADMASK RFC2812 <client> <mask> :<reason> Used when a message is being sent to a mask with an invalid syntax
416 ERR_TOOMANYMATCHES IRCnet <client> <command> [<mask>] :<info> Returned when too many matches have been found for a command and the output has been truncated. An example would be the WHO command, where by the mask '*' would match everyone on the network! Ouch!
416 ERR_QUERYTOOLONG ircu Same as ERR_TOOMANYMATCHES
417 ERR_INPUTTOOLONG ircu Returned when an input line is longer than the server can process (512 bytes), to let the client know this line was dropped (rather than being truncated)
419 ERR_LENGTHTRUNCATED aircd
420 ERR_AMBIGUOUSCOMMAND InspIRCd <client> :Ambiguous abbreviation Used by InspIRCd's m_abbreviation module
421 ERR_UNKNOWNCOMMAND RFC1459 <client> <command> :<reason> Returned when the given command is unknown to the server (or hidden because of lack of access rights)
422 ERR_NOMOTD RFC1459 <client> :<reason> Sent when there is no MOTD to send the client
423 ERR_NOADMININFO RFC1459 <client> <server> :<reason> Returned by a server in response to an ADMIN request when no information is available. RFC1459 mentions this in the list of numerics. While it's not listed as a valid reply in section 4.3.7 ('Admin command'), it's confirmed to exist in the real world.
424 ERR_FILEERROR RFC1459 <client> :<reason> Generic error message used to report a failed file operation during the processing of a command
425 ERR_NOOPERMOTD Unreal
429 ERR_TOOMANYAWAY Bahamut
430 ERR_EVENTNICKCHANGE AustHex Returned by NICK when the user is not allowed to change their nickname due to a channel event (channel mode +E)
431 ERR_NONICKNAMEGIVEN RFC1459 <client> :<reason> Returned when a nickname parameter expected for a command isn't found
432 ERR_ERRONEUSNICKNAME RFC1459 <client> <nick> :<reason> Returned after receiving a NICK message which contains a nickname which is considered invalid, such as it's reserved ('anonymous') or contains characters considered invalid for nicknames. This numeric is misspelt, but remains with this name for historical reasons :)
433 ERR_NICKNAMEINUSE RFC1459 <client> <nick> :<reason> Returned by the NICK command when the given nickname is already in use
434 ERR_SERVICENAMEINUSE AustHex?
434 ERR_NORULES Unreal, Ultimate
435 ERR_SERVICECONFUSED Unreal
435 ERR_BANONCHAN Bahamut Also known as ERR_BANNICKCHANGE (ratbox, charybdis)
436 ERR_NICKCOLLISION RFC1459 <nick> :<reason> Returned by a server to a client when it detects a nickname collision
437 ERR_UNAVAILRESOURCE RFC2812 <client> <nick/channel/service> :<reason> Return when the target is unable to be reached temporarily, eg. a delay mechanism in play, or a service being offline
437 ERR_BANNICKCHANGE ircu
438 ERR_NICKTOOFAST ircu Also known as ERR_NCHANGETOOFAST (Unreal, Ultimate)
438 ERR_DEAD IRCnet
439 ERR_TARGETTOOFAST ircu Also known as many other things, RPL_INVTOOFAST, RPL_MSGTOOFAST, ERR_TARGETTOFAST (Bahamut), etc
440 ERR_SERVICESDOWN Bahamut, Unreal
441 ERR_USERNOTINCHANNEL RFC1459 <client> <nick> <channel> :<reason> Returned by the server to indicate that the target user of the command is not on the given channel
442 ERR_NOTONCHANNEL RFC1459 <client> <channel> :<reason> Returned by the server whenever a client tries to perform a channel effecting command for which the client is not a member
443 ERR_USERONCHANNEL RFC1459 <client> <nick> <channel> [:<reason>] Returned when a client tries to invite a user to a channel they're already on
444 ERR_NOLOGIN RFC1459 <client> <user> :<reason> Returned by the SUMMON command if a given user was not logged in and could not be summoned
445 ERR_SUMMONDISABLED RFC1459 <client> :<reason> Returned by SUMMON when it has been disabled or not implemented
446 ERR_USERSDISABLED RFC1459 <client> :<reason> Returned by USERS when it has been disabled or not implemented
447 ERR_NONICKCHANGE Unreal This numeric is called ERR_CANTCHANGENICK in InspIRCd
448 ERR_FORBIDDENCHANNEL Unreal <channel> :Channel is forbidden: <reason> Returned when this channel name has been explicitly blocked and is not allowed to be used.
449 ERR_NOTIMPLEMENTED Undernet Unspecified Returned when a requested feature is not implemented (and cannot be completed)
451 ERR_NOTREGISTERED RFC1459 <client> :<reason> Returned by the server to indicate that the client must be registered before the server will allow it to be parsed in detail
452 ERR_IDCOLLISION
453 ERR_NICKLOST
455 ERR_HOSTILENAME Unreal
456 ERR_ACCEPTFULL
457 ERR_ACCEPTEXIST
458 ERR_ACCEPTNOT
459 ERR_NOHIDING Unreal Not allowed to become an invisible operator?
460 ERR_NOTFORHALFOPS Unreal
461 ERR_NEEDMOREPARAMS RFC1459 <client> <command> :<reason> Returned by the server by any command which requires more parameters than the number of parameters given
462 ERR_ALREADYREGISTERED RFC1459 <client> :<reason> Returned by the server to any link which attempts to register again Also known as ERR_ALREADYREGISTRED (sic) in ratbox/charybdis.
463 ERR_NOPERMFORHOST RFC1459 <client> :<reason> Returned to a client, which attempts to register with a server which has been configured to refuse connections from the client's host
464 ERR_PASSWDMISMATCH RFC1459 <client> :<reason> Returned by the PASS command to indicate the given password was required and was either not given or was incorrect
465 ERR_YOUREBANNEDCREEP RFC1459 <client> :<reason> Returned to a client after an attempt to register on a server configured to ban connections from that client
466 ERR_YOUWILLBEBANNED RFC1459 Sent by a server to a user to inform that access to the server will soon be denied
467 ERR_KEYSET RFC1459 <client> <channel> :<reason> Returned when the channel key for a channel has already been set
468 ERR_INVALIDUSERNAME ircu
468 ERR_ONLYSERVERSCANCHANGE Bahamut, Unreal
468 ERR_NOCODEPAGE rusnet-ircd
469 ERR_LINKSET Unreal
470 ERR_LINKCHANNEL Unreal Sent by a server to a user who tried to JOIN a channel, when they are forwarded to a different channel because they could not join the original one. The target channel is usually configured with +f (eg. Charybdis) or +L (eg. Unreal)
470 ERR_KICKEDFROMCHAN aircd
470 ERR_7BIT rusnet-ircd
471 ERR_CHANNELISFULL RFC1459 <client> <channel> :<reason> Returned when attempting to join a channel which is set +l and is already full
472 ERR_UNKNOWNMODE RFC1459 <client> <char> :<reason> Returned when a given mode is unknown
473 ERR_INVITEONLYCHAN RFC1459 <client> <channel> :<reason> Returned when attempting to join a channel, which is invite only without an invitation
474 ERR_BANNEDFROMCHAN RFC1459 <client> <channel> :<reason> Returned when attempting to join a channel a user is banned from
475 ERR_BADCHANNELKEY RFC1459 <client> <channel> :<reason> Returned when attempting to join a key-locked channel either without a key or with the wrong key
476 ERR_BADCHANMASK RFC2812 <client> <channel> :<reason> The given channel mask was invalid
477 ERR_NOCHANMODES RFC2812 <client> <channel> :<reason> Returned when attempting to set a mode on a channel, which does not support channel modes, or channel mode changes. Also known as ERR_MODELESS
477 ERR_NEEDREGGEDNICK Bahamut, ircu, Unreal
478 ERR_BANLISTFULL RFC2812 <client> <channel> [char] :<reason> Returned when a channel access list (i.e. ban list etc) is full and cannot be added to
479 ERR_BADCHANNAME Hybrid <client> <channel> :<reason> Returned to indicate that a given channel name is not valid. Servers that implement this use it instead of `ERR_NOSUCHCHANNEL` where appropriate.

Also see ERR_NOSUCHCHANNEL (403).
479 ERR_LINKFAIL Unreal
479 ERR_NOCOLOR rusnet-ircd
480 ERR_NOULINE AustHex
480 ERR_CANNOTKNOCK Unreal
480 ERR_THROTTLE Ratbox <nick> <channel> :Cannot join channel
480 ERR_SSLONLYCHAN Hybrid Moved to 489 to match other servers.

Also see ERR_SECUREONLYCHAN (489).
480 ERR_NOWALLOP rusnet-ircd
481 ERR_NOPRIVILEGES RFC1459 <client> :<reason> Returned by any command requiring special privileges (eg. IRC operator) to indicate the operation was unsuccessful
482 ERR_CHANOPRIVSNEEDED RFC1459 <client> <channel> :<reason> Returned by any command requiring special channel privileges (eg. channel operator) to indicate the operation was unsuccessful. InspIRCd also uses this numeric "for other things like trying to kick a uline"
483 ERR_CANTKILLSERVER RFC1459 <client> :<reason> Returned by KILL to anyone who tries to kill a server
484 ERR_RESTRICTED RFC2812 <client> :<reason> Sent by the server to a user upon connection to indicate the restricted nature of the connection (i.e. usermode +r)
484 ERR_ISCHANSERVICE Undernet
484 ERR_DESYNC Bahamut, Hybrid, PTlink
484 ERR_ATTACKDENY Unreal
485 ERR_UNIQOPRIVSNEEDED RFC2812 <client> :<reason> Any mode requiring 'channel creator' privileges returns this error if the client is attempting to use it while not a channel creator on the given channel
485 ERR_KILLDENY Unreal
485 ERR_CANTKICKADMIN PTlink
485 ERR_ISREALSERVICE QuakeNet
485 ERR_CHANBANREASON Hybrid <client> <channel> :Cannot join channel (<reason>)
485 ERR_BANNEDNICK Ratbox Defined in header file, but never used.
486 ERR_NONONREG Unreal? Also known as ERR_ACCOUNTONLY.
486 ERR_RLINED rusnet-ircd
486 ERR_HTMDISABLED Unreal Unreal 3.2 uses 488 as the ERR_HTMDISABLED numeric instead
487 ERR_CHANTOORECENT IRCnet
487 ERR_MSGSERVICES Bahamut
487 ERR_NOTFORUSERS Unreal?
487 ERR_NONONSSL ChatIRCd <target user> :You must be connected using SSL/TLS to message this user Used for user mode +t (caller ID for all users not using SSL/TLS).
488 ERR_TSLESSCHAN IRCnet
488 ERR_HTMDISABLED Unreal?
488 ERR_NOSSL Bahamut <client> <channel> :SSL Only channel (+S), You must connect using SSL to join this channel.
489 ERR_SECUREONLYCHAN Unreal Also known as ERR_SSLONLYCHAN.
489 ERR_VOICENEEDED Undernet
490 ERR_ALLMUSTSSL InspIRCd <client> <channel> :all members of the channel must be connected via SSL
490 ERR_NOSWEAR Unreal <client> :<nick> does not accept private messages containing swearing.
491 ERR_NOOPERHOST RFC1459 <client> :<reason> Returned by OPER to a client who cannot become an IRC operator because the server has been configured to disallow the client's host
492 ERR_NOSERVICEHOST RFC1459
492 ERR_NOCTCP Hybrid / Unreal? <client> :You cannot send CTCPs to this channel. Not sent: <message> Notifies the user that a message they have sent to a channel has been rejected as it contains CTCPs, and they cannot send messages containing CTCPs to this channel. Also known as ERR_NOCTCPALLOWED (InspIRCd).
492 ERR_CANNOTSENDTOUSER Charybdis? <client> :Cannot send to user <nick> (<reason>)
493 ERR_NOSHAREDCHAN Bahamut <client> :You cannot message that person because you do not share a common channel with them.
493 ERR_NOFEATURE ircu
494 ERR_BADFEATVALUE ircu
494 ERR_OWNMODE Bahamut, charybdis? <client> <nick> :cannot answer you while you are <mode>, your message was not sent Used for mode +g (CALLERID) in charybdis.
495 ERR_BADLOGTYPE ircu
495 ERR_DELAYREJOIN InspIRCd 2.0 <channel> :You cannot rejoin this channel yet after being kicked (+J) This numeric is marked as "we should use 'resource temporarily unavailable' from ircnet/ratbox or whatever". Removed in InspIRCd 3.0.
496 ERR_BADLOGSYS ircu
497 ERR_BADLOGVALUE ircu
498 ERR_ISOPERLCHAN ircu
499 ERR_CHANOWNPRIVNEEDED Unreal Works just like ERR_CHANOPRIVSNEEDED except it indicates that owner status (+q) is needed.

Also see ERR_CHANOPRIVSNEEDED (482).
500 ERR_TOOMANYJOINS Unreal? <client> <string> :Too many join requests. Please wait a while and try again.
500 ERR_NOREHASHPARAM rusnet-ircd
500 ERR_CANNOTSETMODER InspIRCd <client> :Only a server may modify the +r user/channel mode Returned by the server when a client tries to set MODE +r on a user or channel. This mode is set by services for registered users/channels.
501 ERR_UMODEUNKNOWNFLAG RFC1459 <client> :<reason> Returned by the server to indicate that a MODE message was sent with a nickname parameter and that the mode flag sent was not recognised.
501 ERR_UNKNOWNSNOMASK InspIRCd <client> <snomask> :is unknown mode char to me
502 ERR_USERSDONTMATCH RFC1459 <client> :<reason> Error sent to any user trying to view or change the user mode for a user other than themselves
503 ERR_GHOSTEDCLIENT Hybrid <client> :Message could not be delivered to <target>
503 ERR_VWORLDWARN AustHex <client> :<warning_text> Warning about Virtual-World being turned off. Obsoleted in favor for RPL_MODECHANGEWARN

Also see RPL_MODECHANGEWARN (662).
504 ERR_USERNOTONSERV
511 ERR_SILELISTFULL ircu
512 ERR_TOOMANYWATCH Bahamut Also known as ERR_NOTIFYFULL (aircd), I presume they are the same
512 ERR_NOSUCHGLINE ircu
513 ERR_BADPING ircu Also known as ERR_NEEDPONG (Unreal/Ultimate) for use during registration, however it is not used in Unreal (and might not be used in Ultimate either). Also known as ERR_WRONGPONG (Ratbox/charybdis)
514 ERR_TOOMANYDCC Bahamut
514 ERR_NOSUCHJUPE irch
514 ERR_INVALID_ERROR ircu
515 ERR_BADEXPIRE ircu
516 ERR_DONTCHEAT ircu
517 ERR_DISABLED ircu <client> <command> :<info/reason>
518 ERR_NOINVITE Unreal
518 ERR_LONGMASK ircu
519 ERR_ADMONLY Unreal
519 ERR_TOOMANYUSERS ircu
520 ERR_OPERONLY Unreal :Cannot join channel (+O) Also known as ERR_OPERONLYCHAN (Hybrid) and ERR_CANTJOINOPERSONLY (InspIRCd).
520 ERR_MASKTOOWIDE ircu
520 ERR_WHOTRUNC AustHex This is considered obsolete in favor of ERR_TOOMANYMATCHES, and should no longer be used.

Also see ERR_TOOMANYMATCHES (416).
521 ERR_LISTSYNTAX Bahamut
521 ERR_NOSUCHGLINE Nefarious
522 ERR_WHOSYNTAX Bahamut
523 ERR_WHOLIMEXCEED Bahamut <limit> :<command> search limit exceeded.
524 ERR_QUARANTINED ircu
524 ERR_OPERSPVERIFY Unreal
524 ERR_HELPNOTFOUND Hybrid <term> :Help not found
525 ERR_INVALIDKEY ircu
525 ERR_REMOTEPFX CAPAB USERCMDPFX <nickname> :<reason> Proposed.
526 ERR_PFXUNROUTABLE CAPAB USERCMDPFX <nickname> :<reason> Proposed.
531 ERR_CANTSENDTOUSER InspIRCd <client> <nick> :You are not permitted to send private messages to this user
550 ERR_BADHOSTMASK QuakeNet
551 ERR_HOSTUNAVAIL QuakeNet
552 ERR_USINGSLINE QuakeNet
553 ERR_STATSSLINE QuakeNet
560 ERR_NOTLOWEROPLEVEL ircu
561 ERR_NOTMANAGER ircu
562 ERR_CHANSECURED ircu
563 ERR_UPASSSET ircu
564 ERR_UPASSNOTSET ircu
566 ERR_NOMANAGER ircu
567 ERR_UPASS_SAME_APASS ircu
568 ERR_LASTERROR ircu
568 RPL_NOOMOTD Nefarious
569 RPL_WHOISASN Used by InspIRCd's m_asn module. <client> <nick> 64496 :is connecting from AS64496 [Example Corp] Used for displaying ASN info to IRCOps.
597 RPL_REAWAY Unreal
598 RPL_GONEAWAY Unreal Used when adding users to their `"WATCH"` list.
599 RPL_NOTAWAY Unreal Used when adding users to their `"WATCH"` list.
600 RPL_LOGON Bahamut, Unreal
601 RPL_LOGOFF Bahamut, Unreal
602 RPL_WATCHOFF Bahamut, Unreal
603 RPL_WATCHSTAT Bahamut, Unreal
604 RPL_NOWON Bahamut, Unreal
605 RPL_NOWOFF Bahamut, Unreal
606 RPL_WATCHLIST Bahamut, Unreal
607 RPL_ENDOFWATCHLIST Bahamut, Unreal
608 RPL_WATCHCLEAR Ultimate Also known as RPL_CLEARWATCH in Unreal
609 RPL_NOWISAWAY Unreal Returned when adding users to their `"WATCH"` list.
610 RPL_MAPMORE Unreal
610 RPL_ISOPER Ultimate
611 RPL_ISLOCOP Ultimate
612 RPL_ISNOTOPER Ultimate
613 RPL_ENDOFISOPER Ultimate
615 RPL_MAPMORE PTlink
615 RPL_WHOISMODES Ultimate
616 RPL_WHOISHOST Ultimate
617 RPL_WHOISSSLFP Nefarious <client> <nick> :has client certificate fingerprint <fingerprint>

Also see RPL_WHOISCERTFP (276).
617 RPL_DCCSTATUS Bahamut
617 RPL_WHOISBOT Ultimate
618 RPL_DCCLIST Bahamut
619 RPL_ENDOFDCCLIST Bahamut
619 RPL_WHOWASHOST Ultimate
620 RPL_DCCINFO Bahamut
620 RPL_RULESSTART Ultimate
621 RPL_RULES Ultimate
622 RPL_ENDOFRULES Ultimate
623 RPL_MAPMORE Ultimate
624 RPL_OMOTDSTART Ultimate
625 RPL_OMOTD Ultimate
626 RPL_ENDOFOMOTD Ultimate
630 RPL_SETTINGS Ultimate
631 RPL_ENDOFSETTINGS Ultimate
640 RPL_DUMPING Unreal Never actually used by Unreal - was defined however the feature that would have used this numeric was never created.
641 RPL_DUMPRPL Unreal Never actually used by Unreal - was defined however the feature that would have used this numeric was never created.
642 RPL_EODUMP Unreal Never actually used by Unreal - was defined however the feature that would have used this numeric was never created.
650 RPL_SYNTAX InspIRCd 3.0 <client> <command> :<syntax> Sent when the user does not provide enough parameters for a command.
651 RPL_CHANNELSMSG InspIRCd 3.0 <client> <nick> :is on private/secret channels:
652 RPL_WHOWASIP InspIRCd 3.0 <client> <nick> :was connecting from <host>
653 RPL_UNINVITED InspIRCd 3.0 <client> :You were uninvited from <chan> by <nick>
659 RPL_SPAMCMDFWD Unreal <client> <command> :Command processed, but a copy has been sent to ircops for evaluation (anti-spam) purposes. [<reason>] Used to let a client know that a copy of their command has been passed to operators and the reason for it.
670 RPL_STARTTLS IRCv3 <client> :STARTTLS successful, proceed with TLS handshake Indicates that the client may begin the TLS handshake
671 RPL_WHOISSECURE Unreal <client> <nick> :is using a secure connection The text in the last parameter may change. Also known as RPL_WHOISSSL (Nefarious).
672 RPL_UNKNOWNMODES Ithildin <modes> :<info> Returns a full list of modes that are unknown when a client issues a MODE command (rather than one numeric per mode)
672 RPL_WHOISREALIP Rizon <client> <nick> :is actually from <ip> Returns the real IP address of a client connected from a CGIIRC host, this has the real IP address of the client. This message is only sent to themselves or to IRC operators who perform a WHOIS on the user.
673 RPL_CANNOTSETMODES Ithildin <modes> :<info> Returns a full list of modes that cannot be set when a client issues a MODE command
674 RPL_WHOISYOURID ChatIRCd <client> :EUID is <euid> Used to display the user's TS6 UID in WHOIS.
690 ERR_REDIRECT InspIRCd <client> :Target channel #chan must exist to be set as a redirect Indicates an error when setting a channel redirect (MODE +L) or using the banredirect module
691 ERR_STARTTLS IRCv3 <client> :STARTTLS failed (Wrong moon phase) Indicates that a server-side error has occurred
696 ERR_INVALIDMODEPARAM InspIRCd 3.0 <client> <target chan/user> <mode char> <parameter> :<description> Indicates that there was a problem with a mode parameter. Replaces various non-standard mode specific numerics.
697 ERR_LISTMODEALREADYSET InspIRCd 3.0 <client> <target chan> <parameter> <mode char> :<description> Indicates that the user tried to set a list mode which is already set. Replaces various non-standard mode specific numerics.
698 ERR_LISTMODENOTSET InspIRCd 3.0 <client> <target chan> <parameter> <mode char> :<description> Indicates that the user tried to unset a list mode which is not set. Replaces various non-standard mode specific numerics.
700 RPL_COMMANDS InspIRCd 3.0 <client> :<command> <module name> <minimum parameters> <penalty>
701 RPL_COMMANDSEND InspIRCd 3.0 <client> :End of COMMANDS list
702 RPL_MODLIST RatBox <?> 0x<?> <?> <?> Output from the MODLIST command
702 RPL_COMMANDS InspIRCd 2.0 <client> :<command> <module name> <minimum parameters> Moved to 700 in InspIRCd 3.0
703 RPL_ENDOFMODLIST RatBox <client> :<text> Terminates MODLIST output
703 RPL_COMMANDSEND InspIRCd 2.0 <client> :End of COMMANDS list Moved to 701 in InspIRCd 3.0
704 RPL_HELPSTART RatBox <client> <command> :<text> Start of HELP command output
705 RPL_HELPTXT RatBox <client> <command> :<text> Output from HELP command
706 RPL_ENDOFHELP RatBox <client> <command> :<text> End of HELP command output
707 ERR_TARGCHANGE RatBox <client> <target> :Targets changing too fast, message dropped See doc/tgchange.txt in the charybdis source.
708 RPL_ETRACEFULL RatBox <client> <Oper|User> <class> <nick> <username> <host> <ip> :<capabilities> Output from 'extended' trace
709 RPL_ETRACE RatBox <client> <Oper|User> <?> <nick> <username> <host> :<ip> Output from 'extended' trace
710 RPL_KNOCK RatBox <client> <channel> <nick>!<user>@<host> :<text> Message delivered using KNOCK command
711 RPL_KNOCKDLVR RatBox <client> <channel> :<text> Message returned from using KNOCK command (KNOCK delivered)
712 ERR_TOOMANYKNOCK RatBox <client> <channel> :<text> Message returned when too many KNOCKs for a channel have been sent by a user
713 ERR_CHANOPEN RatBox <client> <channel> :<text> Message returned from KNOCK when the channel can be freely joined by the user
714 ERR_KNOCKONCHAN RatBox <client> <channel> :<text> Message returned from KNOCK when the user has used KNOCK on a channel they have already joined
715 ERR_KNOCKDISABLED RatBox <client> :<text> Returned from KNOCK when the command has been disabled
715 ERR_TOOMANYINVITE Hybrid <client> <channel> :Too many INVITEs (<channel/user>). Sent to indicate an INVITE has been blocked. The last parameter is the literal string "channel" if this is because the channel has had too many INVITEs in a given time, and "user" if this is because the user has sent too many INVITEs in a given time
715 RPL_INVITETHROTTLE Rizon <client> <nick> <channel> :You are inviting too fast, invite to <nick> for <channel> not sent. Sent to indicate an INVITE has been blocked.
716 RPL_TARGUMODEG RatBox <nick> :<info> Sent to indicate the given target is set +g (server-side ignore) Mentioned as RPL_TARGUMODEG in the CALLERID spec, ERR_TARGUMODEG in the ratbox/charybdis implementations.
717 RPL_TARGNOTIFY RatBox <nick> :<info> Sent following a PRIVMSG/NOTICE to indicate the target has been notified of an attempt to talk to them while they are set +g
718 RPL_UMODEGMSG RatBox <client> <nick> <user>@<host> :<info> Sent to a user who is +g to inform them that someone has attempted to talk to them (via PRIVMSG/NOTICE), and that they will need to be accepted (via the ACCEPT command) before being able to talk to them
720 RPL_OMOTDSTART RatBox <client> :<text> IRC Operator MOTD header, sent upon OPER command
721 RPL_OMOTD RatBox <client> :<text> IRC Operator MOTD text (repeated, usually)
722 RPL_ENDOFOMOTD RatBox <client> :<text> IRC operator MOTD footer
723 ERR_NOPRIVS RatBox <client> <command> :<text> Returned from an oper command when the IRC operator does not have the relevant operator privileges.
724 RPL_TESTMASK RatBox <client> <nick>!<user>@<host> <?> <?> :<text> Reply from an oper command reporting how many users match a given user@host mask
725 RPL_TESTLINE RatBox <client> <?> <?> <?> :<?> Reply from an oper command reporting relevant I/K lines that will match a given user@host
726 RPL_NOTESTLINE RatBox <client> <?> :<text> Reply from oper command reporting no I/K lines match the given user@host
727 RPL_TESTMASKGECOS RatBox <client> <lcount> <gcount> <nick>!<user>@<host> <gecos> :Local/remote clients match From the m_testmask module, "Shows the number of matching local and global clients for a user@host mask"
728 RPL_QUIETLIST Charybdis <client> <channel> q <banid> [<time_left> :<reason>] Same thing as RPL_BANLIST, but for mode +q (quiet)
729 RPL_ENDOFQUIETLIST Charybdis <client> <channel> q :<info> Same thing as RPL_ENDOFBANLIST, but for mode +q (quiet)
730 RPL_MONONLINE RatBox <client> :target[!user@host][,target[!user@host]]* Used to indicate to a client that either a target has just become online, or that a target they have added to their monitor list is online
731 RPL_MONOFFLINE RatBox <client> :target[,target2]* Used to indicate to a client that either a target has just left the IRC network, or that a target they have added to their monitor list is offline
732 RPL_MONLIST RatBox <client> :target[,target2]* Used to indicate to a client the list of targets they have in their monitor list
733 RPL_ENDOFMONLIST RatBox <client> :End of MONITOR list Used to indicate to a client the end of a monitor list
734 ERR_MONLISTFULL RatBox <client> <limit> <targets> :Monitor list is full. Used to indicate to a client that their monitor list is full, so the MONITOR command failed
740 RPL_RSACHALLENGE2 RatBox <client> :<chal_line> From the ratbox m_challenge module, to auth opers.
741 RPL_ENDOFRSACHALLENGE2 RatBox <client> :End of CHALLENGE From the ratbox m_challenge module, to auth opers.
742 ERR_MLOCKRESTRICTED Charybdis <client> <channel> <modechar> <mlock> :MODE cannot be set due to channel having an active MLOCK restriction policy InspIRCd 2.0 doesn't send the <client> parameter, while 3.0 does
743 ERR_INVALIDBAN Charybdis <channel> <modechar> <mask> :Invalid ban mask
744 ERR_TOPICLOCK InspIRCd? Defined in the Charybdis source code with the comment `"/* inspircd */"`
750 RPL_SCANMATCHED RatBox <count> :matches From the ratbox m_scan module.
751 RPL_SCANUMODES RatBox <nick> <username> <host> <sockhost> <servname> <umodes> :<info> From the ratbox m_scan module.
759 RPL_ETRACEEND irc2.11
760 RPL_WHOISKEYVALUE IRCv3 <Target> <Key> <Visibility> :<Value> Reply to WHOIS - Metadata key/value associated with the target
761 RPL_KEYVALUE IRCv3 <Target> <Key> <Visibility>[ :<Value>] Returned to show a currently set metadata key and its value, or a metadata key that has been cleared if no value is present in the response
762 RPL_METADATAEND IRCv3 :end of metadata Indicates the end of a list of metadata keys
764 ERR_METADATALIMIT IRCv3 <Target> :metadata limit reached Used to indicate to a client that their metadata store is full, and they cannot add the requested key(s)
765 ERR_TARGETINVALID IRCv3 <Target> :invalid metadata target Indicates to a client that the target of a sent METADATA command is invalid
766 ERR_NOMATCHINGKEY IRCv3 <Key> :no matching key Indicates to a client that the requested metadata key does not exist
767 ERR_KEYINVALID IRCv3 <Key> :invalid metadata key Indicates to a client that the requested metadata key is not valid
768 ERR_KEYNOTSET IRCv3 <Target> <Key> :key not set Indicates to a client that the metadata key they requested to clear is not already set
769 ERR_KEYNOPERMISSION IRCv3 <Target> <Key> :permission denied Indicates to a client that they do not have permission to set the requested metadata key
771 RPL_XINFO Ithildin Used to send 'eXtended info' to the client, a replacement for the STATS command to send a large variety of data and minimize numeric pollution.
773 RPL_XINFOSTART Ithildin Start of an RPL_XINFO list
774 RPL_XINFOEND Ithildin Termination of an RPL_XINFO list
801 RPL_STATSCOUNTRY InspIRCd 3.0 <count> <code> :<country> Used by the m_geoclass module of InspIRCd.
802 RPL_CHECK InspIRCd 3.0 Used by the m_check module of InspIRCd.
803 RPL_OTHERUMODEIS InspIRCd 3.0 <client> <nick> <user modes> <user mode parameters> Similar to RPL_UMODEIS but used when an oper views the mode of another user.
804 RPL_OTHERSNOMASKIS InspIRCd 3.0 <client> <nick> <server notice mask> :Server notice mask Similar to RPL_SNOMASK but used when an oper views the snomasks of another user.
900 RPL_LOGGEDIN Charybdis/Atheme, IRCv3 <client> <nick>!<ident>@<host> <account> :You are now logged in as <user> Sent when the user's account name is set (whether by SASL or otherwise)
901 RPL_LOGGEDOUT Charybdis/Atheme, IRCv3 <client> <nick>!<ident>@<host> :You are now logged out Sent when the user's account name is unset (whether by SASL or otherwise)
902 ERR_NICKLOCKED Charybdis/Atheme, IRCv3 <client> :You must use a nick assigned to you. Sent when the SASL authentication fails because the account is currently locked out, held, or otherwise administratively made unavailable.
903 RPL_SASLSUCCESS Charybdis/Atheme, IRCv3 <client> :SASL authentication successful Sent when the SASL authentication finishes successfully

Also see RPL_LOGGEDIN (900).
904 ERR_SASLFAIL Charybdis/Atheme, IRCv3 <client> :SASL authentication failed Sent when the SASL authentication fails because of invalid credentials or other errors not explicitly mentioned by other numerics
905 ERR_SASLTOOLONG Charybdis/Atheme, IRCv3 <client> :SASL message too long Sent when credentials are valid, but the SASL authentication fails because the client-sent AUTHENTICATE command was too long (i.e. the parameter longer than 400 bytes)
906 ERR_SASLABORTED Charybdis/Atheme, IRCv3 <client> :SASL authentication aborted Sent when the SASL authentication is aborted because the client sent an AUTHENTICATE command with * as the parameter
907 ERR_SASLALREADY Charybdis/Atheme, IRCv3 <client> :You have already authenticated using SASL Sent when the client attempts to initiate SASL authentication after it has already finished successfully for that connection.
908 RPL_SASLMECHS Charybdis/Atheme, IRCv3 <client> <mechanisms> :are available SASL mechanisms Sent when the client requests a list of SASL mechanisms supported by the server (or network, services). The numeric contains a comma-separated list of mechanisms
910 RPL_ACCESSLIST InspIRCd <client> <channel> <status>:<mask> <who> <set-ts> Used by InspIRCd's m_autoop module.
911 RPL_ENDOFACCESSLIST InspIRCd <client> <channel> :End of channel access list Used by InspIRCd's m_autoop module.
926 ERR_BADCHANNEL InspIRCd <client> <channel> :Channel <channel> is forbidden: <reason> Used by InspIRCd's m_denychans module.
936 ERR_WORDFILTERED InspIRCd <client> <channel> <message> :Your message contained a censored word, and was blocked Replaced with ERR_CANNOTSENDTOCHAN in InspIRCd 3.0.
937 ERR_ALREADYCHANFILTERED InspIRCd 2.0 <client> <chan> :The word <word> is already on the spamfilter list Used by InspIRCd's m_chanfilter module. Replaced with ERR_LISTMODEALREADYSET in 3.0.
938 ERR_NOSUCHCHANFILTER InspIRCd 2.0 <client> <chan> :No such spamfilter word is set Used by InspIRCd's m_chanfilter module. Replaced with ERR_LISTMODENOTSET in 3.0.
939 ERR_CHANFILTERFULL InspIRCd 2.0 <client> <chan> :Channel spamfilter list is full Used by InspIRCd's m_chanfilter module. Replaced with ERR_BANLISTFULL in 3.0.
940 RPL_ENDOFSPAMFILTER InspIRCd <client> <channel> :End of channel spamfilter list Used by InspIRCd's m_chanfilter module.
941 RPL_SPAMFILTER InspIRCd <client> <channel> <filter> <who> <set-ts> Used by InspIRCd's m_chanfilter module.
942 ERR_INVALIDWATCHNICK InspIRCd <client> <nick> :Invalid nickname Used by InspIRCd's m_watch module.
944 RPL_IDLETIMESET InspIRCd <client> :Idle time set. Used by InspIRCd's m_setidle module.
945 RPL_NICKLOCKOFF InspIRCd <client> <nick> :Nickname now unlocked. Used by InspIRCd's m_nicklock module.
946 ERR_NICKNOTLOCKED InspIRCd <client> <nick> :This user's nickname is not locked. Used by InspIRCd's m_nicklock module.
947 RPL_NICKLOCKON InspIRCd <client> <nick> :Nickname now locked. Used by InspIRCd's m_nicklock module.
948 ERR_INVALIDIDLETIME InspIRCd <client> :Invalid idle time. Used by InspIRCd's m_setidle module.
950 RPL_UNSILENCED InspIRCd <client> <nick> :Removed <mask> <pattern> from silence list Used by InspIRCd's m_silence module.
951 RPL_SILENCED InspIRCd <client> <nick> :Added <mask> <pattern> to silence list Used by InspIRCd's m_silence module.
952 ERR_SILENCE InspIRCd <client> <mask> [<flags>] :<reason> Used by InspIRCd's m_silence module. The flags field was added in v3.
953 RPL_ENDOFEXEMPTIONLIST InspIRCd <client> <channel> :End of channel exemptchanops list Used by InspIRCd's m_exemptchanop module.
954 RPL_EXEMPTIONLIST InspIRCd <client> <channel> <exception> <who> :<set-ts> Used by InspIRCd's m_exemptchanop module.
960 RPL_ENDOFPROPLIST InspIRCd <client> <channel> :End of mode list Used by InspIRCd's m_namedmodes module.
961 RPL_PROPLIST InspIRCd <client> <channel> [+<mode>]... Used by InspIRCd's m_namedmodes module.
972 ERR_CANNOTDOCOMMAND Unreal <client> <command> :<info> Indicates that a command could not be performed for an arbitrary reason. For example, a halfop trying to kick an op.
972 ERR_CANTUNLOADMODULE InspIRCd <client> <modulename> :Failed to unload module: <error>
973 RPL_UNLOADEDMODULE InspIRCd <client> <modulename> :Module successfully unloaded.
974 ERR_CANNOTCHANGECHANMODE Unreal <client> <mode> :<info> Indicates that a channel mode could not be changed for an arbitrary reason. For instance, trying to set OPER_ONLY when you are not an IRC operator.
974 ERR_CANTLOADMODULE InspIRCd <client> <modulename> :Failed to load module: <error>
975 RPL_LOADEDMODULE InspIRCd <client> <modulename> :Module successfully loaded.
975 ERR_LASTERROR Nefarious
988 RPL_SERVLOCKON InspIRCd <client> <server> :Closed for new connections Used by InspIRCd's m_lockserv module.
989 RPL_SERVLOCKOFF InspIRCd <client> <server> :Open for new connections Used by InspIRCd's m_lockserv module.
990 RPL_DCCALLOWSTART InspIRCd <client> :Users on your DCCALLOW list: Used by InspIRCd's m_dccallow module
991 RPL_DCCALLOWLIST InspIRCd <client> <nick> :<nick> (<hostmask>) Used by InspIRCd's m_dccallow module
992 RPL_DCCALLOWEND InspIRCd <client> :End of DCCALLOW list Used by InspIRCd's m_dccallow module
993 RPL_DCCALLOWTIMED InspIRCd <client> <nick> :Added <nick> to DCCALLOW list for <count> seconds Used by InspIRCd's m_dccallow module
994 RPL_DCCALLOWPERMANENT InspIRCd <client> <nick> :Added <nick> to DCCALLOW list for this session Used by InspIRCd's m_dccallow module
995 RPL_DCCALLOWREMOVED InspIRCd <client> <nick> :Removed <nick> from your DCCALLOW list Used by InspIRCd's m_dccallow module.
996 ERR_DCCALLOWINVALID InspIRCd <client> <nick> :<reason> Used by InspIRCd's m_dccallow module.
997 RPL_DCCALLOWEXPIRED InspIRCd <client> <nick> :DCCALLOW entry for <nick> has expired Used by InspIRCd's m_dccallow module.
998 ERR_UNKNOWNDCCALLOWCMD InspIRCd <client> :DCCALLOW command not understood Used by InspIRCd's m_dccallow module.
998 RPL_DCCALLOWHELP InspIRCd <client> :<help> Used by InspIRCd's m_dccallow module.
999 RPL_ENDOFDCCALLOWHELP InspIRCd 2.0 <client> :End of DCCALLOW HELP Used by InspIRCd's m_dccallow module.
999 ERR_NUMERIC_ERR Bahamut Also known as ERR_NUMERICERR (Unreal) or ERR_LAST_ERR_MSG