Apex domains cannot have CNAME records.
Question and response
Question
dig ph3n1.com. NS
Answer
ph3n1.com. 5 NS ns2.ph3n1.com.
ph3n1.com. 5 NS ns1.ph3n1.com.
Authority
The response has no authority records.
Additional
ns1.ph3n1.com. 5 A 62.212.87.50
ns2.ph3n1.com. 5 A 95.211.69.112
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0