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Hosting FAQ

This page provides some technical information and guidelines about using our products for network administrators, server admins, and web hosts. By following these guidelines, you’ll help ensure that our shared user base has the best experience!

VaultPress

The following range needs to be fully whitelisted:

From Address	To Address
192.0.64.1	192.0.127.254

CIDR Notation

For WordFence use this 192.0.[64-127].[1-254]

Akismet

In order for a blog or forum to use Akismet to check spam, it needs to be able to make outgoing TCP connections to servers at Akismet.com. If your network normally blocks outgoing connections from your public web servers, you’ll need to add a firewall rule permitting connections to Akismet.

If your security filters allow exceptions based on hostnames, you should permit connections on port 80 to:

rest.akismet.com
*.rest.akismet.com

Most Akismet API calls will be made to a host name of the form api_key.rest.akismet.com, where api_key is an alphanumeric string that is different for each web site owner.

If your security filters only allow IP-based rules, here are the current IP addresses used for Akismet API calls:

192.0.80.244
192.0.80.246
192.0.96.247
192.0.96.248
192.0.123.250


All API calls are made on port 80 by default. If you are creating IP-based rules, it’s important that you allow connections to all of the listed IP addresses.

Important: these IP addresses are current as of 2016-01-27, but are subject to change.

Akismet Specific System Requirements

Akismet is a spam filtering service. It’s most commonly used with WordPress, but is often used with other blog platforms, forum applications, contact forms and similar web apps. It’s a centralized service, so TCP connectivity to servers at Akismet.com is required for it to work.

System requirements for the WordPress plugin are the same as for WordPress, plus:

  • PHP’s fsockopen and gethostbynamel functions must not be disabled (they are enabled by default in PHP)
  • TCP connectivity to akismet.com

System requirements for other Akismet plugins and implementations vary, but TCP connectivity is always required.

Jetpack

Here are helpful Jetpack troubleshooting links particularly relevant for hosting providers:

Jetpack Basics

Troubleshooting

Find Help

Download a printable .pdf of these Jetpack links.

Jetpack Specific System Requirements

Read more about Jetpack’s Server Requirements. Don’t worry—it is virtually the same as what WordPress expects.

Whitelist all communications between WordPress.com and Jetpack

Jetpack, much like other plugins, services, and apps like the mobile apps, relies on the XML-RPC file to communicate with WordPress.com.

You should be able to protect a site’s XML-RPC file without having to whitelist specific IP ranges. The most popular hosts out there use tools like fail2ban or ModSecurity, for example.

If you’d prefer to use a whitelist, you’ll need to whitelist those IP ranges:

  • 122.248.245.244
  • 54.217.201.243
  • 54.232.116.4
  • 192.0.80.0-192.0.95.255 (in CIDR notation 192.0.80.0/20)
  • 192.0.96.0-192.0.111.255 (in CIDR notation 192.0.96.0/20)
  • 192.0.112.0-192.0.127.255 (in CIDR notation 192.0.112.0/20)

Important: these IP addresses are current as of 2018-05-28, but are subject to change. If you are writing IP-based firewall rules, you’ll need to update those rules any time the addresses change.

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