Apex domains cannot have CNAME records.
Question and response
Question
dig vervehosting.com. NS
Answer
vervehosting.com. 4 NS ns3.vervehosting.com.
vervehosting.com. 4 NS ns.vervehosting.com.
vervehosting.com. 4 NS ns2.vervehosting.com.
Authority
The response has no authority records.
Additional
ns.vervehosting.com. 4 A 135.148.33.232
ns2.vervehosting.com. 4 A 108.181.26.7
ns3.vervehosting.com. 4 A 104.145.237.95
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0