Apex domains cannot have CNAME records.
Question and response
Question
dig payutto.org. NS
Answer
payutto.org. 4 NS ns-291.awsdns-36.com.
payutto.org. 4 NS ns-1948.awsdns-51.co.uk.
payutto.org. 4 NS ns-1643.awsdns-13.co.uk.
payutto.org. 4 NS ns-847.awsdns-41.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0