pixel1.link.net.pk has no NS records.
NS records for this zone are defined at link.net.pk.
NS records for this zone are defined at link.net.pk.
Question and response
Question
dig pixel1.link.net.pk. NS
Answer
The response has no answer records.
Authority
link.net.pk. 600 SOA ns.link.net.pk. hostmaster.link.net.pk. 2020021507 21600 7200 2419200 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0