Apple services
apple-relay.apple.com
apple-relay.apple.com is an Apple host that Apple lists for “Apple Intelligence Extensions”, on port 443 over TCP and UDP, for iOS, iPadOS and macOS.
Short answer
The Apple host that Apple lists for Apple Intelligence Extensions.
Block with care
Blocking it may stop Apple Intelligence Extensions. Apple doesn't document which features those are.
- Matches
apple-relay.apple.com
A name with *. covers every name under it: *.push.apple.com matches 1-courier.push.apple.com.
What it serves
Apple's enterprise host list names apple-relay.apple.com in its Apple Intelligence, Siri, and Search section.
Apple lists it separately from the Private Cloud Compute relays, apple-relay.cloudflare.com.
Apple doesn't describe Apple Intelligence Extensions in that list. Kilobat doesn't guess at what passes through it.
Processes that use it
What breaks if you block it
Block with care
Blocking it may stop Apple Intelligence Extensions. Apple doesn't document which features those are.
What breaks if you block it
- Apple Intelligence features that use extensions may fail.
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
Checked on 1 November 2026.