ns3.naverncp.com has no NS records.
NS records for this zone are defined at naverncp.com.
NS records for this zone are defined at naverncp.com.
Question and response
Question
dig ns3.naverncp.com. NS
Answer
The response has no answer records.
Authority
naverncp.com. 180 SOA ns1.naverncp.com. ns2.naverncp.com. 2020070689 21600 1800 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0