Apex domains cannot have CNAME records.
Question and response
Question
dig howwmuch.com. NS
Answer
howwmuch.com. 4 NS ns-1661.awsdns-15.co.uk.
howwmuch.com. 4 NS ns-456.awsdns-57.com.
howwmuch.com. 4 NS ns-561.awsdns-06.net.
howwmuch.com. 4 NS ns-2025.awsdns-61.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0