---
title: "*.zoom.us: what the Zoom hosts are and what breaks if you block them · Kilobat"
url: "https://kilobat.app/hosts/zoom-us"
description: "*.zoom.us and *.zoom.com are the domains that Zoom lists for all its clients, with the ports meetings need. What breaks if you block them."
---

Apps and helpers

# *.zoom.us

`*.zoom.us` and `*.zoom.com` are the domains that Zoom lists for all its clients. Meetings also use the ports and address ranges in Zoom's firewall article.

Run by Zoom · Ports: 80 and 443 TCP, 443 UDP; meetings also TCP 8801–8802 and UDP 3478–3479, 8801–8810 · Checked: 1 November 2026

## Short answer

Zoom's domains for all Zoom clients, over TCP 80 and 443 and UDP 443.

Block with care

Blocking them stops Zoom meetings, sign-in and updates. To save data, turn off video in meetings instead.

Matches

`zoom.us` `*.zoom.us` `*.zoom.com`

A name with `*.` covers every name under it: `*.push.apple.com` matches `1-courier.push.apple.com`.

## What it serves

Zoom's firewall article lists `*.zoom.us` and `*.zoom.com` on TCP 80 and 443 and UDP 443, for all Zoom clients and the web browser.

For meetings and webinars, Zoom lists TCP 443, 8801 and 8802, and UDP 3478, 3479 and 8801 to 8810, to its own address ranges.

On a Mac, the Zoom app is [`zoom.us`](https://kilobat.app/processes/zoom).

## Processes that use it

- [zoom.us](https://kilobat.app/processes/zoom): The Zoom desktop app. During meetings it sends and receives audio and video; Zoom also updates itself if automatic updates are on.

## What breaks if you block it

Block with care

Blocking them stops Zoom meetings, sign-in and updates. To save data, turn off video in meetings instead.

What breaks if you block it

- The Zoom app can't sign in or join meetings.
- Zoom's website doesn't load.

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.

## Notes

Zoom says that it announces planned changes to its IP addresses on its status page.

## Sources

- [Zoom Support: Zoom network firewall or proxy server settings](https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0060548)

Checked on 1 November 2026.

## Related

- [Video calls stutter or freeze on a Mac](https://kilobat.app/guides/video-call-stutter-mac)