this.co.jp.		30 IN SOA this.co.jp. postmaster.this.co.jp. (
				1524632071 ; serial
				3600       ; refresh (1 hour)
				1800       ; retry (30 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

Name servers:
this.co.jp.		30 IN NS dns01.muumuu-domain.com.
this.co.jp.		30 IN NS dns02.muumuu-domain.com.