choit.vn.		30 IN SOA ns1.dotvndns.vn. hostmaster.choit.vn. (
				2025121502 ; serial
				14400      ; refresh (4 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

Name servers:
choit.vn.		30 IN NS ns2.dotvndns.vn.
choit.vn.		30 IN NS ns1.dotvndns.vn.