ns3.3dg.se has no CNAME records.
Question and response
Question
dig ns3.3dg.se. NS
Answer
The response has no answer records.
Authority
3dg.se. 1779 SOA ns1.3dg.se. registry.3dg.se. 2025122203 14400 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0