so-ten.jp.		30 IN SOA nsm.netassist.ne.jp. root.so-ten.jp. (
				2023092801 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				2419200    ; expire (4 weeks)
				3600       ; minimum (1 hour)
				)

so-ten.jp.		30 IN TXT "v=spf1 +ip4:210.140.40.22 ~all"

so-ten.jp.		30 IN A	210.140.40.22

Mail exchangers:
so-ten.jp.		30 IN MX 10 mail.so-ten.jp.

Name servers:
so-ten.jp.		30 IN NS ns2.netassist.ne.jp.
so-ten.jp.		30 IN NS ns1.netassist.ne.jp.