53dns.net.		30 IN SOA dns.4cun.com. admin.53dns.net. (
				1695720401 ; serial
				3600       ; refresh (1 hour)
				180        ; retry (3 minutes)
				1209600    ; expire (2 weeks)
				600        ; minimum (10 minutes)
				)

53dns.net.		30 IN A	121.40.24.223

Mail exchangers:
53dns.net.		30 IN MX 10 mx01.dm.aliyun.com.