Apex domains cannot have CNAME records.
Question and response
Question
dig PCH.NET. NS
Answer
pch.net. 5 NS ns2.pch.net.
pch.net. 5 NS anyns.pch.net.
pch.net. 5 NS ns3.pch.net.
Authority
The response has no authority records.
Additional
ns2.pch.net. 5 A 204.42.254.5
ns3.pch.net. 5 A 206.220.231.3
anyns.pch.net. 5 A 204.61.216.4
ns2.pch.net. 5 AAAA 2602:fe55:5:0:0:0:0:5
ns3.pch.net. 5 AAAA 2620:0:872:0:0:0:231:3
anyns.pch.net. 5 AAAA 2001:500:14:6004:ad:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0