Apex domains cannot have CNAME records.
Question and response
Question
dig internetcaffe.net. NS
Answer
internetcaffe.net. 5 NS ns-2032.awsdns-62.co.uk.
internetcaffe.net. 5 NS ns-1905.awsdns-46.co.uk.
internetcaffe.net. 5 NS ns-22.awsdns-02.com.
internetcaffe.net. 5 NS ns-327.awsdns-40.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0