I was using NextDNS instead of pihole because I wanted my ad blocking to still work when I’m out and about.
Couldn’t stay on the free tier because I make so many DNS requests. Which seemed weird - it’s just the two of us using the network?
Lo and behold, the fucking forgotten Roku attached to a TV was doing a fresh DNS lookup every 30 seconds to try to call home and send telemetry data. It accounted for like 60% of my DNS traffic!