$ORIGIN . $TTL 38400 ; 10 hours 40 minutes _REV_PRIVATE_NET.in-addr.arpa IN SOA _MY_HOSTNAME.domain.org. root.domain.org. ( 1172933857 ; serial 10800 ; refresh (3 hours) 3600 ; retry (1 hour) 604800 ; expire (1 week) 38400 ; minimum (10 hours 40 minutes) ) NS lvs01.domain.org. NS lvs02.domain.org. $ORIGIN _REV_PRIVATE_NET.in-addr.arpa