Apex domains cannot have CNAME records.
Question and response
Question
dig comclark.com. NS
Answer
comclark.com. 4 NS ns2.comclark.com.
comclark.com. 4 NS ns1.comclark.com.
Authority
The response has no authority records.
Additional
ns1.comclark.com. 4 A 202.69.171.82
ns2.comclark.com. 4 A 202.69.174.194
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0