# Constant Constant declares [5 subprocessors](https://thirdpartyindex.com/vendors/constant#subprocessors) in [its subprocessor list](https://www.vultr.com/legal/subprocessors/), which we last checked on 2026-11-11 ([evidence](https://thirdpartyindex.com/evidence/8714)). They include [ZoomInfo](https://thirdpartyindex.com/vendors/zoominfo), [MaxMind](https://thirdpartyindex.com/vendors/maxmind) and [Aiven](https://thirdpartyindex.com/vendors/aiven). No published changes since we first read it on 2026-09-22. [5 tracked vendors](https://thirdpartyindex.com/vendors/constant#used-by) name Constant as a subprocessor, including [Algolia](https://thirdpartyindex.com/vendors/algolia), [Tailscale](https://thirdpartyindex.com/vendors/tailscale) and [APIVoid](https://thirdpartyindex.com/vendors/apivoid). Constant (constant.com): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index. - Page: https://thirdpartyindex.com/vendors/constant - Documents last verified: 2026-11-11 - Transparency rating: 52/100 (how much it publishes, not how secure it is): Subprocessor list 30/30; Processing locations 8/8; Purposes 0/7 (partial); Data processing addendum 0/12 (not found); Trust center 0/8 (not found); Privacy policy 6/6; security.txt 0/6 (not found); Security page 0/5 (not found); Status page 0/5 (not found); Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8 - Supply chain: relies on 5 tracked vendors directly, 58 within two hops, 288 within three; 5 tracked vendors rely on it directly, 53 within two hops, 501 within three - Cite as: Constant, Third Party Index, https://thirdpartyindex.com/vendors/constant (data CC BY 4.0) ## Documents | Document | URL | Last verified | Last changed | |---|---|---|---| | Subprocessor list | https://www.vultr.com/legal/subprocessors/ | 2026-11-11 | 2026-09-24 | | Privacy policy | https://www.constant.com/legal/privacy/ | 2026-11-11 | 2026-10-15 | | Terms | https://www.constant.com/legal/tos/ | 2026-11-11 | 2026-10-15 | ## Subprocessors (5) As its own list states them. | Subprocessor | Purpose | Location | Listed since | |---|---|---|---| | [Aiven](https://thirdpartyindex.com/vendors/aiven.md) | — | Global (including EU/EEA/USA) | 2026-09-22 | | [Backblaze](https://thirdpartyindex.com/vendors/backblaze.md) | — | Global (including EU/EEA/USA) | 2026-09-22 | | [Kount](https://thirdpartyindex.com/vendors/kount.md) | — | Global (including EU/EEA/USA) | 2026-09-22 | | [MaxMind](https://thirdpartyindex.com/vendors/maxmind.md) | — | Global (including EU/EEA/USA) | 2026-09-22 | | [ZoomInfo](https://thirdpartyindex.com/vendors/zoominfo.md) | — | Global (including EU/EEA/USA) | 2026-09-22 | Read from ([evidence](https://thirdpartyindex.com/evidence/2679)). CSV: https://thirdpartyindex.com/vendors/constant/subprocessors.csv ## Web Technologies Constant's homepage made 54 requests to 12 domains, and 4 services controlled by another company. 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. 4 third parties by category: Advertising 2 (Google Cloud, X Corp.); Analytics 1 (Meta); Cookie compliance 1 (Ketch). 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 (4) - Ketch: 8 requests to ketchcdn.com, ketchjs.com; Ketch - Google Cloud: 4 requests to doubleclick.net, google.com, googleadservices.com, googletagmanager.com; DoubleClick Floodlight, Google Tag Manager - 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 ### First party (1) - Constant: 36 requests to constant.com; Babel, Cloudflare, HSTS, Hammer.js 2.0.7, Open Graph, Priority Hints, core-js 2.6.12, jQuery 3.5.1 2 tracked companies loaded by the homepage are not in Constant's subprocessor list. A website can use a service without it processing customer data. ## Subprocessor of (5) Tracked vendors whose own subprocessor lists name it, and what they say they use it for. - [Algolia](https://thirdpartyindex.com/vendors/algolia.md) - [APIVoid](https://thirdpartyindex.com/vendors/apivoid.md) - [Hund](https://thirdpartyindex.com/vendors/hund.md): Infrastructure - [Maileroo](https://thirdpartyindex.com/vendors/maileroo.md): Cloud infrastructure services including computing, storage, and networking - [Tailscale](https://thirdpartyindex.com/vendors/tailscale.md): Cloud hosting provider for DERP servers (2) ## Incidents reported by Constant's subprocessors Incidents reported in the last 30 days on their own status pages by 3 vendors Constant lists as subprocessors. A subprocessor list names a company, not the service an incident touched. - 2026-11-06: [ZoomInfo](https://thirdpartyindex.com/vendors/zoominfo#status), which Constant lists as a subprocessor, reported Chorus - Login and Call Recording (minor) - 2026-11-05: [Aiven](https://thirdpartyindex.com/vendors/aiven#status), which Constant lists as a subprocessor, reported API requests failing/timing out (no impact stated) - 2026-11-02: [ZoomInfo](https://thirdpartyindex.com/vendors/zoominfo#status), which Constant lists as a subprocessor, reported Chorus - MS Teams Call Recording (no impact stated) - 2026-10-28: [ZoomInfo](https://thirdpartyindex.com/vendors/zoominfo#status), which Constant lists as a subprocessor, reported Neverbounce - Job Processing (minor) - 2026-10-20: [Aiven](https://thirdpartyindex.com/vendors/aiven#status), which Constant lists as a subprocessor, reported Google Cloud VPN incident affecting services (minor) - 2026-10-18: [Aiven](https://thirdpartyindex.com/vendors/aiven#status), which Constant lists as a subprocessor, reported Unable to spin up nodes in vultr-ewr (no impact stated) - 2026-10-16: [Aiven](https://thirdpartyindex.com/vendors/aiven#status), which Constant lists as a subprocessor, reported Issues starting new service nodes (no impact stated) - 2026-10-13: [MaxMind](https://thirdpartyindex.com/vendors/maxmind#status), which Constant lists as a subprocessor, reported Network degradation in us-east region (no impact stated) The subprocessor list as we read it on any date: https://thirdpartyindex.com/labs/time-machine/constant --- 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