Apex domains cannot have CNAME records.
Question and response
Question
dig apj.pb-dynmktga.com. NS
Answer
apj.pb-dynmktga.com. 5 NS ns3-03.azure-dns.org.
apj.pb-dynmktga.com. 5 NS ns4-03.azure-dns.info.
apj.pb-dynmktga.com. 5 NS ns1-03.azure-dns.com.
apj.pb-dynmktga.com. 5 NS ns2-03.azure-dns.net.
Authority
The response has no authority records.
Additional
ns4-03.azure-dns.info. 5 A 208.84.5.3
ns4-03.azure-dns.info. 5 AAAA 2620:1ec:bda:700:0:0:0:3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0