account.apple.com

What it serves

Apple's enterprise host list names both in its Apple Account section, on port 443, with proxy support. Apple describes them as “Apple Account authentication in Settings and System Settings”.

They sit next to idmsa.apple.com, which Apple lists for Apple Account authentication in general.

appleid.cdn-apple.com is under cdn-apple.com, which Apple also lists for iCloud services. Kilobat matches this exact name first.

Processes that use it

What breaks if you block it

With Kilobat Pro and the network filter, you can block a host for every app or for one app: in Connections, select a connection and choose Block. Apple’s own services are never blocked by Kilobat’s Protection lists.

Apple’s rules for its hosts

Apple’s list, Use Apple products on enterprise networks, says that devices open these connections, not Apple’s servers. Apple services fail any connection that uses HTTPS interception, so a proxy that inspects TLS should leave Apple’s hosts alone.

If a firewall allows hosts by name, allowing *.apple.com covers most Apple services, Apple says. A firewall that works only with addresses can allow 17.0.0.0/8 for IPv4, and 2403:300::/32, 2620:149::/32 and 2a01:b740::/32 for IPv6.

To see which app on your Mac opened a connection to this host, use Kilobat’s Connections tab, or the agent network log for AI agents.

Sources

• Apple Support: Use Apple products on enterprise networks

Checked on 1 November 2026.

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