How to class DNS Servers?

Can you please tell me where some of you are classing your DNS Servers?

I can imagine placing them into Server, Application Service, or a new class extending one of these - or a DNS Server class extending Infrastructure Service?

I would treat DNS as an Infrastructure Service and use appropriate CI relationships to indicate which Servers provide that service. Why would you be willing to have a dedicated CI class for them?

I’ve had the same headaches comparing different DNS options, and what helped me was checking a dns list that shows real-time status and long-term reliability. Seeing trust levels and recent checks in one place made it way easier to pick something stable instead of guessing. It also let me sort by country, which was handy when I needed a closer server for better speed.