DNS/zonemasterについて、ここに記述してください。
ゾーンの設定を診断するツールが公開されている。https://www.zonemaster.fr/domain_check
- やってみるといいだろう。
1. jp.sharp
https://www.zonemaster.fr/result/0f6ca09acae4007a
BASIC INFO Parent domain 'sharp' was found for the tested domain. BASIC WARNING Nameserver ns1.sharp.co.jp/61.214.248.154 reponds to a SOA query with no SOA records in the answer ection. BASIC WARNING Nameserver ns1.sharp.co.jp/61.214.248.154 reponds to a NS query with no NS records in the answer section. BASIC WARNING Nameserver tg1.sharp.co.jp/61.214.248.155 reponds to a SOA query with no SOA records in the answer section. BASIC WARNING Nameserver tg1.sharp.co.jp/61.214.248.155 reponds to a NS query with no NS records in the answer section. BASIC ERROR Nameserver ns1.sharp.co.jp/61.214.248.154 did not return NS records. RCODE was NOERROR. BASIC ERROR Nameserver tg1.sharp.co.jp/61.214.248.155 did not return NS records. RCODE was NOERROR.