file1.uplus.co.kr has no NS records.
NS records for this zone are defined at uplus.co.kr.
NS records for this zone are defined at uplus.co.kr.
Question and response
Question
dig file1.uplus.co.kr. NS
Answer
The response has no answer records.
Authority
uplus.co.kr. 300 SOA nis.dacom.co.kr. dnsmaster.bora.net. 2026031202 21600 900 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0