DNS fraud?
I use Opera DNS over HTTPS and AdGuard :
https://dns.adguard.com/dns-query
Tested:
http://www.whatsmydnsserver.com/
https://dnsleaktest.com/
Result:
Your DNS Server 212.102.56.53
Owner of this server Datacamp Limited
"Datacamp Limited - Fraud Risk.
We consider Datacamp Limited...