ns2.proisp.no has no CNAME records.
Question and response
Question
dig ns2.proisp.no. NS
Answer
The response has no answer records.
Authority
proisp.no. 181 SOA auth.g1-dns.one. hostmaster.one.com. 2026021202 1800 900 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0