Apex domains cannot have CNAME records.
Question and response
Question
dig conlinhosting.com. NS
Answer
conlinhosting.com. 5 NS ns-1672.awsdns-17.co.uk.
conlinhosting.com. 5 NS ns-1465.awsdns-55.org.
conlinhosting.com. 5 NS ns-227.awsdns-28.com.
conlinhosting.com. 5 NS ns-1539.awsdns-00.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0