Apex domains cannot have CNAME records.
Question and response
Question
dig cloud.tes.com.pk. NS
Answer
cloud.tes.com.pk. 3 NS ns1.tes.com.pk.
cloud.tes.com.pk. 3 NS ns3.tes.com.pk.
cloud.tes.com.pk. 3 NS ns2.tes.com.pk.
cloud.tes.com.pk. 3 NS ns4.tes.com.pk.
Authority
The response has no authority records.
Additional
ns1.tes.com.PK. 2 A 45.249.11.6
ns2.tes.com.PK. 2 A 45.249.11.7
ns3.tes.com.pk. 2 A 117.20.24.103
ns4.tes.com.pk. 2 A 45.249.9.45
ns1.tes.com.PK. 4 AAAA 2407:aa80:1:100:0:0:0:35
ns2.tes.com.PK. 3 AAAA 2407:aa80:1:100:0:0:0:36
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0