Apex domains cannot have CNAME records.
Question and response
Question
dig act-on.net. NS
Answer
act-on.net. 5 NS ns-1580.awsdns-05.co.uk.
act-on.net. 5 NS ns-1336.awsdns-39.org.
act-on.net. 5 NS ns-79.awsdns-09.com.
act-on.net. 5 NS ns-720.awsdns-26.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0