Apex domains cannot have CNAME records.
Question and response
Question
dig webnode.se. NS
Answer
webnode.se. 5 NS ns-1938.awsdns-50.co.uk.
webnode.se. 5 NS ns-127.awsdns-15.com.
webnode.se. 5 NS ns-796.awsdns-35.net.
webnode.se. 5 NS ns-1060.awsdns-04.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0