_spf.uninett.no has no CNAME records.
Question and response
Question
dig _spf.uninett.no. NS
Answer
The response has no answer records.
Authority
uninett.no. 900 SOA ns.uninett.no. hostmaster.uninett.no. 2026022704 14400 3600 1814400 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0