Apex domains cannot have CNAME records.
Question and response
Question
dig unwiredbb.net. NS
Answer
unwiredbb.net. 5 NS ns2.unwiredbb.com.
unwiredbb.net. 5 NS ns2.unwiredbb.net.
unwiredbb.net. 5 NS ns.unwiredbb.com.
unwiredbb.net. 5 NS ns1.unwiredbb.net.
Authority
The response has no authority records.
Additional
ns.unwiredbb.com. 5 A 64.203.112.21
ns2.unwiredbb.com. 5 A 64.203.112.22
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0