Apex domains cannot have CNAME records.
Question and response
Question
dig oldenglishsheepdogsoffairoaks.com. NS
Answer
oldenglishsheepdogsoffairoaks.com. 5 NS ns-784.awsdns-34.net.
oldenglishsheepdogsoffairoaks.com. 5 NS ns-721.awsdns-26.net.
oldenglishsheepdogsoffairoaks.com. 5 NS ns-1713.awsdns-22.co.uk.
oldenglishsheepdogsoffairoaks.com. 5 NS ns-1211.awsdns-23.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0