$TTL 300 ; 5 minutes @ IN SOA ns root ( 2018010100 ; serial 1800 ; refresh (30 minutes) 1800 ; retry (30 minutes) 1814400 ; expire (3 weeks) 3600 ; minimum (1 hour) ) NS ns ns A 10.53.0.1 www CNAME server.example.net. inzone CNAME a.example.com. a A 10.53.0.1 dname DNAME @ brid BRID \# 2 0000 hhit HHIT \# 2 0000