dns-dns.net.		30 IN SOA ns1.51dns.com. admin.51dns.com. (
				1712478731 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				1800       ; minimum (30 minutes)
				)

dns-dns.net.		30 IN A	121.201.41.12

Mail exchangers:
dns-dns.net.		30 IN MX 10 mail.dns-dns.net.

Name servers:
dns-dns.net.		30 IN NS ns1.51dns.com.
dns-dns.net.		30 IN NS ns2.51dns.com.