qc518.com.		30 IN SOA n1.xundns.com. nsadmin.xundns.com. (
				437896     ; serial
				3600       ; refresh (1 hour)
				600        ; retry (10 minutes)
				86400      ; expire (1 day)
				600        ; minimum (10 minutes)
				)

qc518.com.		30 IN A	156.239.25.249

Name servers:
qc518.com.		30 IN NS n1.xundns.com.
qc518.com.		30 IN NS n2.xundns.com.