Apex domains cannot have CNAME records.
Question and response
Question
dig imc.no. NS
Answer
imc.no. 4 NS isp4.imc.as.
imc.no. 4 NS isp.imc.as.
Authority
The response has no authority records.
Additional
isp.imc.as. 4 A 87.254.33.25
isp4.imc.as. 4 A 87.254.35.25
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0