Apex domains cannot have CNAME records.
Question and response
Question
dig prd.q4inc.com. NS
Answer
prd.q4inc.com. 5 NS ns-1089.awsdns-08.org.
prd.q4inc.com. 5 NS ns-75.awsdns-09.com.
prd.q4inc.com. 5 NS ns-940.awsdns-53.net.
prd.q4inc.com. 5 NS ns-1549.awsdns-01.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0