This page is a unique reference for numerics used by the various IRC servers:

Conflicts

NOTE: Numeric 263 used in 2.9.5 and CSr30.5 has a similar meaning in both versions, even though the name is different.

IRC 2.8.21

This can be used as a reference, as other various are either the descendant, or originally based on it.

IRC 2.9.5

The latest version of the IRC software. Here's a summary of the changes:

IRCU 2.10.02

The Undernet version is actually based on 2.8.10, but from 2.8.10 to 2.8.21, the only numeric added was RPL_STATSDEBUG (249). Here's the summary of changes:

IRC CSr30.5

The version maintain by Chris Behrens, used on EFnet. Here's the summary of changes:

IRC Hybrid 5

Another version used on EFnet. Here's the summary of changes:

IRC dal 4.6.3

This version is used on dalnet, it's a spinoff from ircu. Here's the summary of changes:

Christophe Kalt <kalt@stealth.net>