How to validate Cloudflare domain names for Firewall DNS filters

Website, Application, Performance DNS & Network
1

What is the name of the domain?

What is the error number?

N/A

What is the error message?

various

What is the issue you’re encountering

Various Cloudflare Hostnames discovered

What steps have you taken to resolve the issue?

I’ve attempted to validate several of the hostnames with no success. Is there a way to get a list of every ip, or hostname, the warp agent uses so they can be allowlisted?

What feature, service or problem is this related to?

DNS records

What are the steps to reproduce the issue?

Monitoring from firewall discovers the hostnames below… are they valid?

engage.cloudflareclient[dot]com; 162.159.192.5; 2408(railgun-wecaccl)
api.cloudflare[dot]com; 162.159.192.1;443(https)
cloudflareportal[dot]com; 104.17.230.184; 443(https)
cloudflareok[dot]com; 104.18.15.229; 443(https)

Also many other port 53 traffic with the following hostnames
cloudflarecp[dot]com
cloudflare[dot]com[dot]local
cloudflareok[dot]local[dot]lan

2

Here is the Cloudflare’s IP range that you may need to include in your Firewall Filters:

For further information, please refer to the documentation here:

3

Got it, thanks Zakri

4

Looks like the ip list is about a year old.
Can you verified the ip 162.159.182.0?

Or the following hostnames:
cloudflareok.com
cloudflareportal.com
cloudflarecp.com

?

5

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