dongnaigsm.vn.		30 IN SOA ns1.bkdns.vn. hostmaster.dongnaigsm.vn. (
				2024050100 ; serial
				14400      ; refresh (4 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				360        ; minimum (6 minutes)
				)

dongnaigsm.vn.		30 IN TXT "v=spf1 include:_spf.bkdata.vn ~all"

dongnaigsm.vn.		30 IN A	103.90.232.200

Mail exchangers:
dongnaigsm.vn.		30 IN MX 5 mail.dongnaigsm.vn.

Name servers:
dongnaigsm.vn.		30 IN NS ns1.bkdns.vn.
dongnaigsm.vn.		30 IN NS ns3.bkdns.vn.
dongnaigsm.vn.		30 IN NS ns2.bkdns.vn.