Hooking Server Numerics                                                     

In addition to the numerous named hooks provided by the client (refer to the
ON command in Section 5), EPIC can hook any numeric reply sent by a server.
They are treated no differently from named hooks.  Space constraints prevent
a full discussion of all server numerics, not to mention that they tend to
differ from network to network.

A small subset of commonly used numerics are provided for convenience.  A
mostly full listing can be found in the irc protocol specification, RFC 1459
(though you should look in the ircd source code for an exact list; they are
in the file s_err.c in standard ircd distributions).

   Replies to /whois:   311-313, 317-319
   Replies to /mode +b: 367, 368
   Replies to /trace:   200-206, 208, 209, 261, 262
   Replies to /stats:   211-219, 241-244

   Common error numerics: 401 (nickname doesn't exist)
                        : 404 (can't send message to channel)
                        : 421 (unknown command)
                        : 436 (nickname collision server kill)
                        : 465 (you're banned from server)
                        : 473 (can't join channel, invite-only)
                        : 474 (can't join channel, banned)
                        : 482 (you're not a channel operator)

