Apex domains cannot have CNAME records.
Question and response
Question
dig lexontria.org. NS
Answer
lexontria.org. 5 NS ns-1596.awsdns-07.co.uk.
lexontria.org. 5 NS ns-1030.awsdns-00.org.
lexontria.org. 5 NS ns-1418.awsdns-49.org.
lexontria.org. 5 NS ns-1447.awsdns-52.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0