Apex domains cannot have CNAME records.
Question and response
Question
dig versionone.com. NS
Answer
versionone.com. 5 NS ns-918.awsdns-50.net.
versionone.com. 5 NS ns-1856.awsdns-40.co.uk.
versionone.com. 5 NS ns-393.awsdns-49.com.
versionone.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