ccert.edu.cn.		30 IN SOA ns.ccert.edu.cn. postmaster.ccert.edu.cn. (
				2022061501 ; serial
				28800      ; refresh (8 hours)
				7200       ; retry (2 hours)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

ccert.edu.cn.		30 IN A	166.111.204.8

Mail exchangers:
ccert.edu.cn.		30 IN MX 5 mail.ccert.edu.cn.

Name servers:
ccert.edu.cn.		30 IN NS dns.ccert.edu.cn.
ccert.edu.cn.		30 IN NS dns2.ccert.edu.cn.