doftp.com.		30 IN SOA a.dnspod.com. domainadmin.dnspod.com. (
				1410669991 ; serial
				3600       ; refresh (1 hour)
				180        ; retry (3 minutes)
				1209600    ; expire (2 weeks)
				180        ; minimum (3 minutes)
				)

Name servers:
doftp.com.		30 IN NS c.dnspod.com.
doftp.com.		30 IN NS a.dnspod.com.
doftp.com.		30 IN NS b.dnspod.com.