Command - ACC
Usage   - ACC nick

This command serves as a protocol to query user access using
the NickServ facility.  The reply is given in a NOTICE of the
following format:

      ACC nick access level

The returned access level is a number from 0 to 3:

 0 = No such registered nickname
 1 = User is not online or not identified to NickServ
 2 = User is identified via ACCESS lists
 3 = User is identified via IDENTIFY command