lgesmtp.lge.com has no NS records.
NS records for this zone are defined at lge.com.
NS records for this zone are defined at lge.com.
Question and response
Question
dig lgesmtp.lge.com. NS
Answer
The response has no answer records.
Authority
lge.com. 60 SOA prmns.lg.co.kr. root.prmns.lg.co.kr. 2026031001 86400 3600 2419200 60
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0