extspf.tietokeskus.com has no CNAME records.
Question and response
Question
dig extspf.tietokeskus.com. NS
Answer
The response has no answer records.
Authority
tietokeskus.com. 10751 SOA ns1.ratkaisutalo.fi. palvelu.ratkaisutalo.fi. 2025080601 5400 3600 3600000 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0