PiHole shows blocking "http://c.go-mpulse.net" on my plotter rig?

Just setup PiHole, not sure why as I have Pfblockerng running in pfSense lol but I was bored and had a spare Pi3B.

Why would this be getting blocked from my Ubuntu chia rig? it’s not plotting anything at the moment (no hard drives left) it is running a full node and another Pi4 is a harvester only.

I’m not using the Ubuntu rig at all apart from a Chia full node farming my plots.