sn1907.cn.		600 IN SOA dns11.hichina.com. hostmaster.hichina.com. (
				2022011003 ; serial
				3600       ; refresh (1 hour)
				1200       ; retry (20 minutes)
				86400      ; expire (1 day)
				600        ; minimum (10 minutes)
				)

sn1907.cn.		600 IN A 121.40.81.62

Mail exchangers:
sn1907.cn.		600 IN MX 1 mxdomain.qq.com.

Name servers:
sn1907.cn.		21600 IN NS dns11.hichina.com.
sn1907.cn.		21600 IN NS dns12.hichina.com.