mx01.anf.gov.PK has no CNAME records.
Question and response
Question
dig mx01.anf.gov.PK. NS
Answer
The response has no answer records.
Authority
anf.gov.pk. 555 SOA ns3.rapidcompute.com. dns-services.cyber.net.pk. 1632727272 600 60 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0