HostServ
From freenode wiki
GROUP
Syntax:
GROUP
This command allows users to set the vhost of their CURRENT nick to be the vhost for all nicks in the same group.
OFF
Syntax:
OFF
Deactivates the vhost currently assigned to the nick in use. When you use this command any user who performs a /whois on you will see your real host/IP address.
ON
Syntax:
ON
Activates the vhost currently assigned to the nick in use. When you use this command any user who performs a /whois on you will see the vhost instead of your real host/IP address.
SETALL
Syntax:
SETALL nick hostmask
