Apex domains cannot have CNAME records.
Question and response
Question
dig sydskane.nu. NS
Answer
sydskane.nu. 2 NS ns2.teleservice.net.
sydskane.nu. 2 NS ns1.teleservice.net.
Authority
The response has no authority records.
Additional
ns1.teleservice.net. 2 A 85.30.129.10
ns2.teleservice.net. 2 A 85.30.160.10
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0