Apex domains cannot have CNAME records.
Question and response
Question
dig geetoo.uk. NS
Answer
geetoo.uk. 4 NS ns2.geetoo.com.
geetoo.uk. 4 NS ns1.geetoo.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0