Syntax: LIST pattern
Lists all registered nicknames which match the given pattern, in nick!user@host format.  Nicks with the PRIVATE option set will not be displayed. Note that a pattern preceding with a '#' specifies a range.
Examples:

    LIST *!joeuser@foo.com
        Lists all nicks owned by joeuser@foo.com.

    LIST *Bot*!*@*
        Lists all registered nicks with Bot in their
        names (case insensitive).

    LIST *!*@*.bar.org
        Lists all nicks owned by users in the bar.org
        domain.

    LIST #50-100
        Lists nicks numbers 50-100