bac.edu.vn.		30 IN SOA ns1.pavietnam.vn. hostmaster.bac.edu.vn. (
				2024110304 ; serial
				14400      ; refresh (4 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

bac.edu.vn.		30 IN A	157.66.47.94

Name servers:
bac.edu.vn.		30 IN NS ns1.pavietnam.vn.
bac.edu.vn.		30 IN NS ns2.pavietnam.vn.
bac.edu.vn.		30 IN NS nsbak.pavietnam.net.