ctsc.vn.		30 IN SOA ns4.tenten.vn. hostmaster.ctsc.vn. (
				2023122321 ; serial
				3600       ; refresh (1 hour)
				900        ; retry (15 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

ctsc.vn.		30 IN TXT "v=spf1 mx a ip4:143.95.249.149 ~all"

ctsc.vn.		30 IN A	115.146.127.150

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

Name servers:
ctsc.vn.		30 IN NS ns5.tenten.vn.
ctsc.vn.		30 IN NS ns6.tenten.vn.
ctsc.vn.		30 IN NS ns4.tenten.vn.