cnrdn.com.		30 IN SOA ns1.alibabadns.com. hostmaster.alibabadns.com. (
				2022120521 ; serial
				3600       ; refresh (1 hour)
				1200       ; retry (20 minutes)
				86400      ; expire (1 day)
				360        ; minimum (6 minutes)
				)

Name servers:
cnrdn.com.		30 IN NS ns2.alibabadns.com.
cnrdn.com.		30 IN NS ns1.alibabadns.com.