$TTL 86400 $ORIGIN 80.100.in-addr.arpa. @ 1D IN SOA ns.kaz.sns. hostmaster.kaz.sns. ( 2002022401 ; serial 3H ; refresh 15 ; retry 1w ; expire 3h ; nxdomain ttl ) IN NS ns.kaz.sns. ns IN A 100.80.0.2 ns IN AAAA 2001:db8:80::0:2 2.0 IN PTR smtp.kaz.sns. 1.0 IN PTR router.kaz.sns. 1.1 IN PTR router.kaz.sns. 2.1 IN PTR listes.kaz.sns.