Apex domains cannot have CNAME records.
Question and response
Question
dig pcdc.net. NS
Answer
pcdc.net. 5 NS ns1.pcdc.net.
pcdc.net. 5 NS ns2.pcdc.net.
Authority
The response has no authority records.
Additional
ns1.pcdc.net. 5 A 204.11.55.2
ns2.pcdc.net. 5 A 204.11.55.144
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0