-WHOWAS <nick> [limit]
+WHOWAS <nick> [limit] [server|nick]
WHOWAS will show you the last known host and whois
information for the specified nick. Depending on the
If a limit is specified, WHOWAS will not show more
than that many listings.
+The third parameter allows querying another server.
+
The WHOWAS data will expire after time.