Cloudflare IP ranges?

Hi folks. I have allowlisted the IP ranges in this page IP Ranges but I’ve noticed a few 403 for other addresses that seem to belong to Cloudflare according to WHOIS - e.g.

Are some of the IPs missing from that page?


They are listed.

Notice the CIDR prefix**/17**.

So, translates to network mask of with the IP range of to


Doh, yes. But strange IIS returns a 403 for that address as it is not doing the calculations correctly.

I will have another look through the logs now.

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IIS should recognize CIDR, or maybe you have to provide them network mask. Take a look at the docs.
I really don’t know about IIS. My first and last deployment with IIS was in 2004. :smiley:

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