Updates and downloads
*.mzstatic.com
Hosts under mzstatic.com belong to Apple. Apple lists the domain for store content, such as apps, books and music, and apps from websites and alternative marketplaces.
Short answer
An Apple domain for store content such as apps, books and music, and apps from websites and alternative marketplaces.
Block with care
Blocking it breaks some App Store content. Apps you already have keep working.
- Matches
*.mzstatic.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 *.mzstatic.com in its Apps and additional content section, on port 443.
Apple's description also names apps from websites and alternative marketplaces.
On a Mac, App Store content and downloads belong to appstoreagent and the App Store app.
Processes that use it
What breaks if you block it
Block with care
Blocking it breaks some App Store content. Apps you already have keep working.
What breaks if you block it
- Store content hosted there, such as apps, books and music, may not download.
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.