Spikey query graph

My query graph on the app never used to look like this but lately it's the norm. Any idea what might cause this kind of pattern??

Your network clients activity. :wink:

Inspect your Pi-hole's Query Log to find out whether that would be caused by a specific client requesting resolution for a specific domain.

If so, try to address the issue on the client, e.g. by disabling or reconfiguring whatever software is issuing those DNS requests.