vdctraining.vn.		30 IN SOA ns3.vdc3.vn. vdconline.tld. (
				1597290989 ; serial
				3600       ; refresh (1 hour)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)

vdctraining.vn.		30 IN A	222.255.167.131

Mail exchangers:
vdctraining.vn.		30 IN MX 10 mail.vdctraining.vn.

Name servers:
vdctraining.vn.		30 IN NS ns3.vdc3.vn.
vdctraining.vn.		30 IN NS ns4.vdc3.vn.