$TTL 3H @ IN SOA @ rname.invalid. ( 2015092464 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum @ NS ns1.zhen.net. ns1 A 192.168.1.68 @ A 192.168.1.68 zpapi A 192.168.1.7 overseas A 192.168.1.130 file A 192.168.1.8 search A 192.168.1.116 product A 192.168.1.181