www.ustc.org.		30 IN SOA ns1.ibspark.com. hostmaster.www.ustc.org. (
				1730436000 ; serial
				28800      ; refresh (8 hours)
				7200       ; retry (2 hours)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)

www.ustc.org.		30 IN TXT "v=spf1 -all"

www.ustc.org.		30 IN A	75.2.37.224

Name servers:
www.ustc.org.		30 IN NS ns2.ibspark.com.
www.ustc.org.		30 IN NS ns1.ibspark.com.