Why Cloudflare now uses three round-robin DNS A records?

A couple of months ago, Cloudflare started adding a third IP address to every domain, even for Free plans.

For example:
moodle.org uses Cloudflare
104.22.64.81
104.22.65.81
172.67.26.233

ctm-demo.com uses Cloudflare Enterprise
104.18.249.77
104.18.250.77

Notice the 172. extra IP
It also appears to have different routing.

Does someone know what is the purpose of this third IP address appearing on some Cloudflare websites?

Thanks!

A post was merged into an existing topic: Proxy IP Addresses