Apex domains cannot have CNAME records.
Question and response
Question
dig westelcom.com. NS
Answer
westelcom.com. 5 NS ns.westelcom.com.
westelcom.com. 5 NS ns2.westelcom.com.
Authority
The response has no authority records.
Additional
ns.westelcom.com. 5 A 64.19.76.51
ns2.westelcom.com. 5 A 64.19.68.42
ns2.westelcom.com. 5 A 64.19.76.52
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0