Apex domains cannot have CNAME records.
Question and response
Question
dig dev.g22t.capcom.com. NS
Answer
dev.g22t.capcom.com. 5 NS ns-955.awsdns-55.net.
dev.g22t.capcom.com. 5 NS ns-10.awsdns-01.com.
dev.g22t.capcom.com. 5 NS ns-1957.awsdns-52.co.uk.
dev.g22t.capcom.com. 5 NS ns-1037.awsdns-01.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0