My ISP is Comcast/Xfinity, but their servers haven't showed up at all on the DNS test.
First attempt (it's still there...)
Second attempt
Before my third attempt, I restarted PiHole, flushed the DNS cache of PiHole, my computer, and Chrome, and restarted my PC. I'm beginning to think there's another problem
Maybe I have some form of malware? This DNS can't be coming from nowhere