Apex domains cannot have CNAME records.
Question and response
Question
dig ndtradingcorp.com. NS
Answer
ndtradingcorp.com. 5 NS ns-1712.awsdns-22.co.uk.
ndtradingcorp.com. 5 NS ns-980.awsdns-58.net.
ndtradingcorp.com. 5 NS ns-2023.awsdns-60.co.uk.
ndtradingcorp.com. 5 NS ns-1923.awsdns-48.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0