Apex domains cannot have CNAME records.
Question and response
Question
dig ajm-international.com. NS
Answer
ajm-international.com. 5 NS ns-1606.awsdns-08.co.uk.
ajm-international.com. 5 NS ns-551.awsdns-04.net.
ajm-international.com. 5 NS ns-697.awsdns-23.net.
ajm-international.com. 5 NS ns-1342.awsdns-39.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0