> Instead of the way it is now: > # nslookup 192.168.2.206 > 206.2.168.192.in-addr.arpa name = server1.ctois.local.2.168.192.in-addr.arpa. In your zone file be sure that the name that is the target of the PTR records has a final dot. Without the trailing dot, the names are interpreted as relative to the current origin.