Apex domains cannot have CNAME records.
Question and response
Question
dig weloveemail.nl. NS
Answer
weloveemail.nl. 5 NS ns-121.awsdns-15.com.
weloveemail.nl. 5 NS ns-1407.awsdns-47.org.
weloveemail.nl. 5 NS ns-672.awsdns-20.net.
weloveemail.nl. 5 NS ns-1645.awsdns-13.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0