keihoku.com.		30 IN SOA ns1.value-domain.com. hostmaster.keihoku.com. (
				2020122719 ; serial
				3600       ; refresh (1 hour)
				900        ; retry (15 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

keihoku.com.		30 IN TXT "v=spf1 ip4:202.172.28.80 ~all"

keihoku.com.		30 IN A	202.172.28.80

Mail exchangers:
keihoku.com.		30 IN MX 10 keihoku.com.

Name servers:
keihoku.com.		30 IN NS ns1.value-domain.com.
keihoku.com.		30 IN NS ns2.value-domain.com.