122x209x142x243.ap122.ftth.ucom.ne.jp has no NS records.
NS records for this zone are defined at ap122.ftth.ucom.ne.jp.
NS records for this zone are defined at ap122.ftth.ucom.ne.jp.
Question and response
Question
dig 122x209x142x243.ap122.ftth.ucom.ne.jp. NS
Answer
The response has no answer records.
Authority
ap122.ftth.ucom.ne.jp. 3600 SOA ns03.usen.ad.jp. root.ns03.usen.ad.jp. 2022080401 10800 3600 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0