$ORIGIN example.com. $TTL 3600 @ SOA dns1.example.com. hostmaster.example.com. ( 2010111213 ; serial 6h ; refresh 1h ; retry 1w ; expire 1d ) ; minimum NS dns1 NS dns2 MX 10 mail dns1 A 192.0.2.1 AAAA 2001:DB8::1 dns2 A 192.0.2.2 AAAA 2001:DB8::2 mail A 192.0.2.3 AAAA 2001:DB8::3