See below for a list of supported channel modes on AfterX
| Channel Modes | |
| A | Only Administrators may join the channel. |
| a nickname | Gives protection to that user so they can not be kicked out of the channel. |
| b nick!user@host | Bans the given host from entering the channel. |
| c | No ANSI colors can be sent to the channel. |
| C | No CTCP's can be sent to the channel. |
| e nick!user@host | Adds an exception ban to the list. If someone matches this, they can join the channel even if a current ban is set matching their host. |
| f * lines:seconds | Flood protection, if the * is given a user will kick banned when they send lines:seconds if no * they are just kicked. |
| G | Makes channel G rated. Checks for words listed in the Bad Word Blocks, and replaces them with the words specified |
| M | A registered nickname (+r) is required to talk. |
| h nick | Givers half-op status to the user. |
| i | A channel invite is required. |
| K | /Knock is not allowed. |
| k [key] | A specified [key] is needed to join. |
| l [limit] | Set max number of users allowed in the channel. |
| L [channel] | If the maximum amount of users has been reached, other users will be sent to this channel. |
| m | Moderated channel, only +o, +h, +v users may speak. |
| N | No nick name changes permitted. |
| n | No messages from outside the channel. |
| O | Only IRC Ops may join the channel. |
| o [nick] | Gives the specified user operator status. |
| p | Makes channel private. |
| q | Sets channel owener. |
| Q | Only U:Lined servers can kick users. |
| R | Requires a registered nick to join. |
| S | Strips all incoming colors. |
| s | Makes channel secret. |
| t | Only chanops can set a topic. |
| u | Auditorium Makes /names and /who #channel only show channel ops. |
| V | /invite is not allowed. |
| v [nick] | Gives user voice status. |
| z | Only clients on a Secure (SSL) Connection may join. |