Apex domains cannot have CNAME records.
Question and response
Question
dig travelrabbit.org. NS
Answer
travelrabbit.org. 5 NS ns-1165.awsdns-17.org.
travelrabbit.org. 5 NS ns-2039.awsdns-62.co.uk.
travelrabbit.org. 5 NS ns-42.awsdns-05.com.
travelrabbit.org. 5 NS ns-1240.awsdns-27.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0