%BNickServ ACC%B allows you to view the current status of a nickname. It
is intended to be used by scripts.

Syntax: %BACC%B %Unick%U

The codes have the following meanings:
  0  The nick is not registered.
  1  The nick is registered but not in use.
  2  The nick is in use but the user has not identified.
  3  The nick is in use and the user has identified.
