| 000 series | 
| 001 | Welcome to the Internet Relay Network nickname | 
| 002 | :Your host is server, running version ver | 
| 003 | :This server was created datetime | 
| 004 | server ver usermode chanmode | 
| 005a | :map | 
| 005b | protocols :are available on this server | 
| 007 | :End of /MAP | 
| 008 | num :: Server notice mask (hex) | 
| 200 series | 
| 211 | :connection sendq sentmsg sentbyte recdmsg recdbyte :open | 
| 212 | command uses bytes | 
| 213 | C address * server port class | 
| 214 | N address * server port class | 
| 215 | I ipmask * hostmask port class | 
| 216 | k address * username details | 
| 217 | P port ?? ?? | 
| 218 | Y class ping freq maxconnect sendq | 
| 219 | char :End of /STATS report | 
| 221 | mode | 
| 222a | nickmask :comment | 
| 222b | B server * ?? ?? ?? | 
| 223 | E hostmask * username ?? ?? | 
| 224 | D ipmask * username ?? ?? | 
| 241 | L address * server ?? ?? | 
| 242 | :Server Up num days, time | 
| 243 | o mask password user ?? class | 
| 244 | H address * server ?? ?? | 
| 247 | G address timestamp :reason | 
| 248 | U host * ?? ?? ?? | 
| 249 | :info | 
| 250 | :Highest connection count: total (num clients) | 
| 251 | :There are user users and invis invisible on serv servers | 
| 252 | num :operator(s) online | 
| 253 | num :unknown connection(s) | 
| 254 | num :channels formed | 
| 255 | :I have user clients and serv servers | 
| 256 | :Administrative info about server | 
| 257 | :info | 
| 258 | :info | 
| 259 | :info | 
| 263 | :Server load is temporarily too heavy. Please wait a while and try again. | 
| 265 | :Current local users: curr Max: max | 
| 266 | :Current global users: curr Max: max | 
| 271 | nick mask | 
| 272 | :End of Silence List | 
| 280 | address timestamp reason | 
| 281 | :End of G-line List | 
| 290 | :num ***** topic ***** | 
| 291/td> | :text | 
| 292 | : ***** Go to #dalnethelp if you have any further questions ***** | 
| 293 | :text | 
| 294 | :Your help-request has been forwarded to Help Operators | 
| 298 | nick :Nickname conflict has been resolved | 
| 300 series | 
| 301 | nick :away | 
| 302 | :userhosts | 
| 303 | :nicknames | 
| 305 | :You are no longer marked as being away | 
| 306 | :You have been marked as being away | 
| 307 | :userips | 
| 310 | nick :looks very helpful | 
| 311 | nick username address * :info | 
| 312a | nick server :info | 
| 312b | nick server :signoff | 
| 313 | nick :is an IRC Operator | 
| 314 | nick username address * :info | 
| 315 | request :End of /WHO list. | 
| 317 | nick seconds signon :info | 
| 318 | request :End of /WHOIS list. | 
| 319 | nick :channels | 
| 321 | Channel :Users Name | 
| 322 | channel users :topic | 
| 323 | :End of /LIST | 
| 324 | channel mode | 
| 328 | channel :url | 
| 329 | channel time | 
| 331 | channel :No topic is set. | 
| 332 | channel :topic | 
| 333 | channel nickname time | 
| 341 | nick channel | 
| 351 | version .debug server :info | 
| 352 | channel username address server nick flags :hops info | 
| 353 | = channel :names | 
| 364 | server hub :hops info | 
| 365 | mask :End of /LINKS list. | 
| 366 | channel :End of /NAMES list. | 
| 367 | channel ban nick time | 
| 368 | channel :End of Channel Ban List | 
| 369 | request :End of WHOWAS | 
| 371 | :info | 
| 372 | :- info | 
| 374 | :End of /INFO list. | 
| 375 | :- server Message of the Day - | 
| 376 | :End of /MOTD command. | 
| 377 | :- info | 
| 378 | :- info | 
| 381 | :You are now an IRC Operator | 
| 382 | file :Rehashing | 
| 391 | server :time | 
| 400 series | 
| 401a | nickname :No such nick | 
| 401b | * :Target left UnderNet. Failed to deliver: message | 
| 402 | server :No such server | 
| 403 | channel :No such channel | 
| 404 | channel :Cannot send to channel | 
| 405 | channel :You have joined too many channels | 
| 406 | nickname :There was no such nickname | 
| 407 | target :Duplicate recipients. No message delivered | 
| 409 | :No origin specified | 
| 411 | :No recipient given (command ) | 
| 412 | :No text to send | 
| 413 | mask :No toplevel domain specified | 
| 414 | mask :Wildcard in toplevel Domain | 
| 416 | command :Too many lines in the output, restrict your query | 
| 421 | command :Unknown command | 
| 422 | :MOTD File is missing | 
| 423 | server :No administrative info available | 
| 431 | :No nickname given | 
| 432 | nickname :Erroneus Nickname | 
| 433a | nickname :Nickname is already in use. | 
| 433b | nickname :Nickname is registered to someone else. | 
| 436 | nickname :Nickname collision KILL | 
| 437 | channel :Cannot change nickname while banned on channel | 
| 438 | nick :Nick change too fast. Please wait sec seconds. | 
| 439 | target :Target change too fast. Please wait sec seconds. | 
| 441 | nickname channel :They aren't on that channel | 
| 442 | channel :You're not on that channel | 
| 443 | nickname channel :is already on channel | 
| 445 | :SUMMON has been disabled | 
| 446 | :USERS has been disabled | 
| 451 | command :Register first. | 
| 455 | :Your username ident contained the invalid character(s) chars and has been changed to new. Please use only the characters 0-9 a-z A-Z _ - or . in your username. Your username is the part before the @ in your email address. | 
| 461 | command :Not enough parameters | 
| 462 | :You may not reregister | 
| 467 | channel :Channel key already set | 
| 468 | channel :Only servers can change that mode | 
| 471 | channel :Cannot join channel (+l) | 
| 472 | char :is unknown mode char to me | 
| 473 | channel :Cannot join channel (+i) | 
| 474 | channel :Cannot join channel (+b) | 
| 475 | channel :Cannot join channel (+k) | 
| 477a | channel :You need a registered nick to join that channel. | 
| 477b | channel :Channel doesn't support modes | 
| 478 | channel ban :Channel ban/ignore list is full | 
| 481 | :Permission Denied- You're not an IRC operator | 
| 482 | channel :You're not channel operator | 
| 483 | :You cant kill a server! | 
| 484 | nick channel :Cannot kill, kick or deop channel service | 
| 491 | :No O-lines for your host | 
| 500 series | 
| 501 | :Unknown MODE flag | 
| 502 | :Cant change mode for other users | 
| 510 | :You must resolve the nickname conflict before you can proceed | 
| 511 | mask :Your silence list is full | 
| 512a | address :No such gline | 
| 512b | :Authorization required to use Registered Nickname nick | 
| 512c | nick :Maximum size for WATCH-list is num entries | 
| 513 | If you can't connect, type /QUOTE PONG code or /PONG code | 
| 600 series | 
| 600 | nick userid host time :logged offline | 
| 601 | nick userid host time :logged online | 
| 602 | nick userid host time :stopped watching | 
| 603 | :You have mine and are on other WATCH entries | 
| 604 | nick userid host time :is online | 
| 605 | nick userid host time :is offline | 
| 606 | :nicklist | 
| 607 | :End of WATCH query |