city.nayoro.hokkaido.jp	IN	NS	ns007-697dn23vvd2k9nfl.6.d-53.info.
city.nayoro.hokkaido.jp	IN	NS	ns007-697dn23vvd2k9nfl.6.d-53.jp.
city.nayoro.hokkaido.jp	IN	NS	ns007-697dn23vvd2k9nfl.6.d-53.net.