Hello: This is probably a stupid question, but if the network address is 64.207.45.64/26 (the subnet mask is 255.255.255.192), would the zone in the /etc/named.conf file be: zone "64.45.207.64.in-addr.arpa" { type master; file "64.207.45.64.rev"; } Would you need all four octets in the zone name because the subnet mask isn't 255.255.255.0? Thanks, Jeff Keil