Apex domains cannot have CNAME records.
Question and response
Question
dig calpop.com. NS
Answer
calpop.com. 3 NS ns1.calcarrier.com.
calpop.com. 3 NS ns2.calcarrier.com.
Authority
The response has no authority records.
Additional
ns1.calcarrier.com. 3 A 23.123.173.162
ns2.calcarrier.com. 3 A 23.123.173.170
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0