Apex domains cannot have CNAME records.
Question and response
Question
dig multinet.com.PK. NS
Answer
multinet.com.pk. 5 NS ns2.multi.net.pk.
multinet.com.pk. 5 NS ns1.multi.net.pk.
Authority
The response has no authority records.
Additional
ns1.multi.net.pk. 5 A 202.141.224.34
ns2.multi.net.pk. 5 A 202.141.229.34
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0