---
title: "guzzoni.apple.com: what it is and what breaks if you block it · Kilobat"
url: "https://kilobat.app/hosts/guzzoni-apple-com"
description: "guzzoni.apple.com is the Apple host for Siri and dictation requests. What it receives, which process uses it, and what breaks if you block it."
---

Apple services

# guzzoni.apple.com

`guzzoni.apple.com` is the Apple host that Apple lists for “Siri and dictation requests”, on port 443, for iOS, iPadOS, macOS and visionOS.

Run by Apple · Ports: 443 TCP · Checked: 1 November 2026

## Short answer

Apple's host for Siri and dictation requests.

Safe to block

Safe to block if you don't use Siri or server dictation. It's cleaner to turn Siri off in System Settings.

Matches

`guzzoni.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 `guzzoni.apple.com` in its Apple Intelligence, Siri, and Search section. Apple says that devices must reach it to process Siri requests, including dictation.

On a Mac, the Siri daemon is [`assistantd`](https://kilobat.app/processes/assistantd), so its connections here are Siri or dictation requests.

Apple doesn't document which Siri requests stay on the Mac.

## Processes that use it

- [assistantd](https://kilobat.app/processes/assistantd): Part of macOS. It is the Siri daemon, so Siri requests and dictation that need Apple's servers can show under it.

## What breaks if you block it

Safe to block

Safe to block if you don't use Siri or server dictation. It's cleaner to turn Siri off in System Settings.

What breaks if you block it

- Siri requests that need Apple's servers fail.
- Dictation that uses Apple's servers fails.

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](https://kilobat.app/docs/blocking#protection) lists.

## Apple’s rules for its hosts

Apple’s list, [Use Apple products on enterprise networks](https://support.apple.com/en-us/101555), 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](https://kilobat.app/docs/agents#agent-network-log) for AI agents.

## Sources

- [Apple Support: Use Apple products on enterprise networks](https://support.apple.com/en-us/101555)
- assistantd(8), man page installed with macOS 27.2

Checked on 1 November 2026.

## Related

- [*.smoot.apple.com](https://kilobat.app/hosts/smoot-apple-com): Apple's search services, for suggestions in Siri, Spotlight, Look Up, Safari, News, Messages and Music.
- [apple-relay.cloudflare.com](https://kilobat.app/hosts/private-cloud-compute-relays): Hosts on Cloudflare and Fastly that Apple lists for Private Cloud Compute, where some Apple Intelligence requests are processed.