city.tsukuba.ibaraki.jp	IN	MX	ip.city.tsukuba.ibaraki.jp
city.tsukuba.ibaraki.jp	IN	NS	ns005-j5b3e3mmn2iq272k.j.d-53.info
city.tsukuba.ibaraki.jp	IN	NS	ns005-j5b3e3mmn2iq272k.j.d-53.jp
city.tsukuba.ibaraki.jp	IN	NS	ns005-j5b3e3mmn2iq272k.j.d-53.net
info.tsukuba.ibaraki.jp	IN	NS	ns009-pnu8ndr1sms6mrst.p.d-53.info
info.tsukuba.ibaraki.jp	IN	NS	ns009-pnu8ndr1sms6mrst.p.d-53.jp
info.tsukuba.ibaraki.jp	IN	NS	ns009-pnu8ndr1sms6mrst.p.d-53.net