s30.info.		30 IN SOA master.dns.ne.jp. tech.sakura.ad.jp. (
				2020110718 ; serial
				3600       ; refresh (1 hour)
				900        ; retry (15 minutes)
				3600000    ; expire (5 weeks 6 days 16 hours)
				3600       ; minimum (1 hour)
				)

s30.info.		30 IN A	133.242.249.223

Mail exchangers:
s30.info.		30 IN MX 10 s30.info.

Name servers:
s30.info.		30 IN NS ns1.dns.ne.jp.
s30.info.		30 IN NS ns2.dns.ne.jp.