Apex domains cannot have CNAME records.
Question and response
Question
dig integritywatch.com. NS
Answer
integritywatch.com. 5 NS ns.integritywatch.com.
integritywatch.com. 5 NS ns2.datacontact.hu.
integritywatch.com. 5 NS eternal.datacontact.hu.
Authority
The response has no authority records.
Additional
ns.integritywatch.com. 5 A 195.228.75.149
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0