Apex domains cannot have CNAME records.
Question and response
Question
dig pocketinet.com. NS
Answer
pocketinet.com. 5 NS ns-1784.awsdns-31.co.uk.
pocketinet.com. 5 NS ns-1299.awsdns-34.org.
pocketinet.com. 5 NS ns-123.awsdns-15.com.
pocketinet.com. 5 NS ns-957.awsdns-55.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0