How can I create IP access rule for /22 address?

We use Smarsh to archive our site. They have provided four IP addresses that need to be given access on Cloudflare. I was able to create rules for the two ending in /24, but the two ending in /22 will not work (I get an error code every time.) Please advise on how to create IP access rules for all the addresses and/or ranges that Smarsh needs. Smarsh Central

If it’s just an Allow List you’re trying to put into Firewall → Tools, it’s easier with a Firewall Rule:

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Yes, it’s allowed only /24 and /16 to put there.

You can have multiple /24 from one /22 like below:

199.47.168.0/22
IP range: 199.47.168.1 - 199.47.171.254

199.47.168.0/24
199.47.169.0/24
199.47.170.0/24
199.47.171.0/24

199.59.52.0/22
IP range: 199.59.52.1 - 199.59.55.254

199.59.52.0/24
199.59.53.0/24
199.59.54.0/24
199.59.55.0/24
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Thanks so much. I will give this a try.

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This is very helpful. Thanks so much!

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