4th.in.			30 IN SOA ns1.in.th. root.4th.in. (
				2023062701 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				180        ; minimum (3 minutes)
				)

4th.in.			30 IN TXT "v=spf1 a mx ip4:202.162.77.4 -all"

4th.in.			30 IN A	202.162.77.4

Mail exchangers:
4th.in.			30 IN MX 0 mail.4th.in.

Name servers:
4th.in.			30 IN NS ns3.4th.in.
4th.in.			30 IN NS ns4.4th.in.