Apex domains cannot have CNAME records.
Question and response
Question
dig q4web.com. NS
Answer
q4web.com. 5 NS ns-1686.awsdns-18.co.uk.
q4web.com. 5 NS ns-792.awsdns-35.net.
q4web.com. 5 NS ns-431.awsdns-53.com.
q4web.com. 5 NS ns-1098.awsdns-09.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0