$TTL 3600 @ 4D IN SOA ns1.example.net. hostmaster.example.net. ( 204041514 ; serial 4H ; refresh (RFC1537) 30M ; retry (RFC1537) 1D ; expiry (RFC1537) 3H ) ; minimum (RFC1537) NS ns1.example.net. NS ns2.example.net. MX 10 mx.example.net. MX 20 relay.example.net. localhost A 127.0.0.1 @ IN A 10.0.0.1 ftp 1H CNAME www www A 10.1.0.1 www A 10.2.0.1 fast 10S CNAME www slow 12W CNAME www $ORIGIN sub1.example.net. @ A 10.1.0.1 $ORIGIN sub1 @ A 10.1.1.1 $ORIGIN sub2.sub1.example.net. @ A 10.1.2.1 $ORIGIN sub2.example.net. @ A 10.2.0.1 $ORIGIN sub1 @ A 10.2.1.1