# Zello

[1 tracked vendor](https://thirdpartyindex.com/vendors/zello#used-by), [Command Alkon](https://thirdpartyindex.com/vendors/command-alkon), names Zello as a subprocessor. We have not found a subprocessor list published by Zello. We monitor 7 of its documents, which we last checked on 2026-11-11.

Zello (zello.com): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index.

- Page: https://thirdpartyindex.com/vendors/zello
- Documents last verified: 2026-11-11
- Transparency rating: 50/100 (how much it publishes, not how secure it is): Subprocessor list 0/30 (not found); Processing locations 0/8 (no list); Purposes 0/7 (no list); Data processing addendum 12/12; Trust center 8/8; Privacy policy 6/6; security.txt 6/6; Security page 5/5; Status page 0/5 (not found); Vulnerability disclosure 5/5; Pages still reachable 8/8
- Supply chain: relies on 0 tracked vendors directly, 0 within two hops, 0 within three; 1 tracked vendors rely on it directly, 1 within two hops, 1 within three
- Cite as: Zello, Third Party Index, https://thirdpartyindex.com/vendors/zello (data CC BY 4.0)

## Documents

| Document | URL | Last verified | Last changed |
|---|---|---|---|
| Trust center | https://trust.zello.com/ | 2026-11-11 | 2026-09-21 |
| Data processing addendum | https://zello.com/legal/data-processing-addendum/ | 2026-11-11 | 2026-11-11 |
| Privacy policy | https://zello.com/legal/privacy-policy/ | 2026-11-11 | 2026-11-11 |
| Terms | https://zello.com/legal/terms/ | 2026-11-11 | 2026-11-11 |
| Security page | https://zello.com/security | 2026-11-11 | 2026-09-21 |
| security.txt | https://zello.com/.well-known/security.txt | 2026-11-11 | 2026-09-21 |
| Security advisories | https://trust.zello.com/?itemuid=2a28efe5-7720-41e6-8a66-a9e3230c2704&amp%3Bsource=click&itemUid=55bf6264-ccc7-4b0d-bd34-683c575c751b&source=click&itemName=access\_control | 2026-11-11 | 2026-09-21 |

## Subprocessors (0)

No subprocessor list has been found or read for this vendor.

## Compliance

As its trust center lists them.

- Audited: SOC 2 Type II, ISO/IEC 27001, CSA STAR ([evidence](https://thirdpartyindex.com/evidence/1613))
- Claimed: HIPAA, GDPR, Data Privacy Framework, COPPA ([evidence](https://thirdpartyindex.com/evidence/1613))

## Web Technologies

Zello's homepage made 105 requests to 29 domains, 10 services controlled by another company, and 1 domain not identified. Loaded on 2026-11-04 by a browser that accepted nothing; other visits may load more or less. What a page loads is not a list of who receives customer data.

10 third parties by category: Analytics 5 (HubSpot, TikTok, LinkedIn, Meta, TikTok); Advertising 2 (Google Cloud, X Corp.); Marketing automation 1 (Propensity); Cookie compliance 1 (Osano); Digital asset management 1 (reviewed: Cloudinary). Each company that appears controlled by another organization is counted once, under the main category of the technologies detected from it on this homepage or, when none was, the category recorded from the company's own page (marked reviewed) or else the one it is usually detected as on other published homepages (marked as such); unclassified: none of these.

### Third parties (10)

- Cloudinary: 35 requests to cloudinary.com
- Google Cloud: 24 requests to google.com, doubleclick.net, googletagmanager.com, gstatic.com, ajax.googleapis.com, fonts.googleapis.com; DoubleClick Floodlight, Google Analytics, Google Font API, Google Hosted Libraries, Google Tag Manager
- HubSpot: 11 requests to hubspot.com, hs-analytics.net, hs-banner.com, hs-scripts.com, hsadspixel.net, hsforms.com, hubapi.com, usemessages.com; HubSpot, HubSpot Analytics, HubSpot Chat
- TikTok: 6 requests to tiktok.com; TikTok Pixel
- Osano: 4 requests to osano.com; Osano
- LinkedIn: 3 requests to linkedin.com, licdn.com; Linkedin Insight Tag
- Meta: 3 requests to facebook.net, facebook.com; Facebook Pixel 2.9.435
- X Corp.: 3 requests to ads-twitter.com, t.co, twitter.com; Twitter Ads
- Propensity: 2 requests to propensity-abm.com, propensity.com; Propensity
- TikTok: 1 request to tiktokw.us; TikTok Pixel

### Unknown (1)

Domains not identified yet: usbrowserspeed.com

### First party (1)

- Zello: 12 requests to zello.com; Cloudflare, Cloudinary, HSTS, LazySizes, Open Graph, PWA, Priority Hints, core-js 3.32.2, lit-html 2.8.0

8 tracked companies loaded by the homepage are not in Zello's subprocessor list. A website can use a service without it processing customer data.

## Subprocessor of (1)

Tracked vendors whose own subprocessor lists name it, and what they say they use it for.

- [Command Alkon](https://thirdpartyindex.com/vendors/command-alkon.md): Push-to-talk wireless communications

## Security contact

From its security.txt (https://zello.com/.well-known/security.txt) ([evidence](https://thirdpartyindex.com/evidence/1605)):

- Contact: https://vdp.zello.com/p/Send-a-report
- Contact: mailto:security@zello.com
- Disclosure policy: https://vdp.zello.com/p/Policy
- Languages: en
- Valid until 2030-12-31

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Third Party Index (https://thirdpartyindex.com) monitors vendors' public security and privacy documents and keeps each version as evidence. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); vendors' own documents are theirs. API: https://thirdpartyindex.com/api