hnou.edu.vn.		30 IN SOA ns4.tenten.vn.hnou.edu.vn. hostmaster.hnou.edu.vn. (
				2023092812 ; serial
				3600       ; refresh (1 hour)
				900        ; retry (15 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

hnou.edu.vn.		30 IN TXT "v=spf1 mx a ip4:103.11.199.34 ~all"

hnou.edu.vn.		30 IN A	103.11.199.34

Mail exchangers:
hnou.edu.vn.		30 IN MX 10 mail.hnou.edu.vn.

Name servers:
hnou.edu.vn.		30 IN NS NS5.TENTEN.vn.
hnou.edu.vn.		30 IN NS NS4.TENTEN.vn.
hnou.edu.vn.		30 IN NS NS6.TENTEN.vn.