Apex domains cannot have CNAME records.
Question and response
Question
dig interfacelight.com. NS
Answer
interfacelight.com. 5 NS ns-745.awsdns-29.net.
interfacelight.com. 5 NS ns-1783.awsdns-30.co.uk.
interfacelight.com. 5 NS ns-1063.awsdns-04.org.
interfacelight.com. 5 NS ns-955.awsdns-55.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0