_dc-mx.686bf458310c.gtq.jp has no NS records.
NS records for this zone are defined at gtq.jp.
NS records for this zone are defined at gtq.jp.
Question and response
Question
dig _dc-mx.686bf458310c.gtq.jp. NS
Answer
The response has no answer records.
Authority
gtq.jp. 1800 SOA celeste.ns.cloudflare.com. dns.cloudflare.com. 2397871870 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0