Cloudflare apparently uses servers on a research groups domain:
"Second, there's the IP address. The 1.0.0/24 and 1.1.1/24 blocks are reserved exclusively for research use. Specifically, Geoff Huston, APNIC's big-data guy, collects lots and lots of datasets, and does some pretty interesting analysis on them, often with useful outcomes for network operators. Putting aside for another day the story of how Cloudflare managed to get the use of the address, it came with two big caveats: that the data be collected and given to Geoff, and that they only got the loan of it for five years."
This is a copy and paste from a discussion on snbforums:
Snbforums Quad9 vs. Cloudflare
This is a very long discussion that is in many places over my head.
"Second, there's the IP address. The 1.0.0/24 and 1.1.1/24 blocks are reserved exclusively for research use. Specifically, Geoff Huston, APNIC's big-data guy, collects lots and lots of datasets, and does some pretty interesting analysis on them, often with useful outcomes for network operators. Putting aside for another day the story of how Cloudflare managed to get the use of the address, it came with two big caveats: that the data be collected and given to Geoff, and that they only got the loan of it for five years."
This is a copy and paste from a discussion on snbforums:
Snbforums Quad9 vs. Cloudflare
This is a very long discussion that is in many places over my head.