mail.gigaantest02.awk.jp has no NS records.
NS records for this zone are defined at gigaantest02.awk.jp.
NS records for this zone are defined at gigaantest02.awk.jp.
Question and response
Question
dig mail.gigaantest02.awk.jp. NS
Answer
The response has no answer records.
Authority
gigaantest02.awk.jp. 300 SOA ns.gigaantest02.awk.jp. h\.ota.itboost.co.jp. 1679968785 14400 60 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0