Change cloudflare proxy IP pool

What is the name of the domain?

example.com

What is the issue you’re encountering

Some customers have the cloudflare proxy IP blocked. Is it possible to issue a different IP pool for the proxy?

What feature, service or problem is this related to?

Nameservers

What are the steps to reproduce the issue?

Block cloudflare porxy IP in the network
try to access a proxied website.

IP addresses may occasionally change, but you cannot change them by yourself. Only thing you could try is to add the domain to another Cloudflare account, but that does not guarantee that these addresses may not also be blocked. You best reach out to the ISP and clarify why the block IP addresses.