Apex domains cannot have CNAME records.
Question and response
Question
dig prowifihost.com. NS
Answer
prowifihost.com. 5 NS sh1.prowifihost.com.
prowifihost.com. 5 NS ns27.domaincontrol.com.
prowifihost.com. 5 NS sh2.prowifihost.com.
prowifihost.com. 5 NS ns28.domaincontrol.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0