I received notification that Cloudflare is making infrastructure changes to simplify customer configuration, and reduce the number of IPv4 addresses that could potentially interact with your origin on Cloudflare’s behalf.
If your security model relies on allowing a list of trusted Cloudflare IPs from cloudflare.com/ips (or via API) on your origin, please make the following changes to your allow list by May 7, 2021 . This change is safe to make today.
How do I do this??
This change delists the 188.8.131.52/14 prefix, which is no longer in use by Cloudflare infrastructure. These addresses will be repurposed for use with our Gateway and WARP (secure web gateway and VPN) products, and may carry traffic from untrusted sources in the future.