Apex domains cannot have CNAME records.
Question and response
Question
dig tbaytel.net. NS
Answer
tbaytel.net. 5 NS ns2.tbaytel.net.
tbaytel.net. 5 NS ns1.tbaytel.net.
Authority
The response has no authority records.
Additional
ns1.tbaytel.net. 5 A 216.211.64.11
ns2.tbaytel.net. 5 A 216.211.65.11
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0