# Yeastar

Yeastar declares [5 subprocessors](https://thirdpartyindex.com/vendors/yeastar#subprocessors) in [its subprocessor list](https://www.yeastar.com/p-series-se-dpa#subprocessors), which we last checked on 2026-10-25 ([evidence](https://thirdpartyindex.com/evidence/147059)). They include [Amazon Web Services](https://thirdpartyindex.com/vendors/amazon-web-services), [Microsoft](https://thirdpartyindex.com/vendors/microsoft) and [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs). No published changes since we first read it on 2026-10-23.

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

- Page: https://thirdpartyindex.com/vendors/yeastar
- Documents last verified: 2026-10-26
- Transparency rating: 69/100 (how much it publishes, not how secure it is): Subprocessor list 30/30; Processing locations 8/8; Purposes 7/7; 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 5/5; Status page 5/5; Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8
- Supply chain: relies on 4 tracked vendors directly, 45 within two hops, 209 within three; 0 tracked vendors rely on it directly, 0 within two hops, 0 within three
- Cite as: Yeastar, Third Party Index, https://thirdpartyindex.com/vendors/yeastar (data CC BY 4.0)

## Documents

| Document | URL | Last verified | Last changed |
|---|---|---|---|
| Subprocessor list | https://www.yeastar.com/p-series-se-dpa#subprocessors | 2026-10-25 | 2026-10-23 |
| Privacy policy | https://www.yeastar.com/privacy/ | 2026-10-26 | 2026-10-21 |
| Terms | https://www.yeastar.com/terms-of-service-linkus/ | 2026-10-26 | 2026-10-21 |
| Security page | https://www.yeastar.com/pbx/security/ | 2026-10-26 | 2026-10-21 |
| Status page | https://status.yeastar.com/ | 2026-10-26 | 2026-10-21 |

## Subprocessors (5)

As its own list states them.

| Subprocessor | Purpose | Location | Listed since |
|---|---|---|---|
| [Agora](https://thirdpartyindex.com/vendors/agora.md) | Provide Video Conferencing service¹ | Germany; United Kingdom; Russia; South Africa; United States, Canada, Singapore, Malaysia, Indonesia, Australia, | 2026-10-24 |
| [Amazon Web Services](https://thirdpartyindex.com/vendors/amazon-web-services.md) | (Text-to-Speech to generate voice prompt,; Provide Remote Access Service and Remote Management¹; Provide Transcription services¹; Speech-to-Text for Call Transcription and Voicemail Transcription) | Australia, Brazil, Bahrain, Canada, France, Germany, Hong Kong,; Germany, Hong Kong, Indonesia, Singapore,; Germany, Hong Kong, Indonesia, Singapore, Thailand,; Ireland; Italy; Singapore; South Africa; United Kingdom; United States; Thailand; United States; United Kingdom; United States; United Kingdom | 2026-10-24 |
| [Azure OpenAI Service](https://thirdpartyindex.com/vendors/microsoft.md) (AI model provider: Azure OpenAI) | Provide LLM-powered Call Summary services¹ | Canada; France; Singapore; Sweden; Switzerland; Korea, Japan, India, Australia, United States, United Kingdom, Canada, France, Singapore,; Korea, Japan, India, Australia,United States, United Kingdom,; Sweden; Switzerland | 2026-10-24 |
| [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs.md) (AI model provider: ElevenLabs) | Provide AI Receptionist service¹ | Belgium; United States; United States; Belgium | 2026-10-24 |
| Netease, Inc. | (The server connection can be disabled if the Internal Chat service is not required); Provide Instant Messaging services¹ | China | 2026-10-24 |

Read from ([evidence](https://thirdpartyindex.com/evidence/147059)). CSV: https://thirdpartyindex.com/vendors/yeastar/subprocessors.csv

AI model providers (or a cloud provider's AI model service) among these entries: 2. All vendors that list one: https://thirdpartyindex.com/ai

## Subprocessor of (0)

No tracked vendor lists it.

## Incidents reported by Yeastar's subprocessors

Incidents reported in the last 30 days on their own status pages by 1 vendor Yeastar lists as a subprocessor. A subprocessor list names a company, not the service an incident touched.

- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported EU Agents disruption in SIP calls (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported EU - STT - Increase in latency in the EU Residency for Speech-to-Text requests (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Claude MCP connection not working (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Inbound Twilio calls experiencing intermittent connection failures (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Marketing website (no impact stated)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Increased Rate of LLM Failure Errors on Agent Platform Calls (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Request failures with the V3 model (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Instant Voice Clone creation failures (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported \[Isolated environments\] Issue with voices on EU and India Residency environments (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Agent SIP Conversation Disruption (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Payment Issues (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported EU Residency - Issue with the Agents platform, TTS and Scribe in the EU residency server (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Some TTS requests seeing increased latency (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Elevated error rate for Eleven Multilingual v2 model (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Increased Dubbing Latency and Failure Rate (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported EU Residency - Conversation history not showing for recent calls (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Some support request forms may be unavailable (no impact stated)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported ElevenReader Elevated Error Rates (no impact stated)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Website authentication rejecting all frontend requests (critical)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Website Slowness and API Request Latency (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Transfer to Human not working correctly (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Elevated error rates for TTS v3, Dubbing, STT (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Elevated error rates querying voices (minor)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Increased error rate for Forced Alignment (major)
- 2026-10-21: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Increased API error rate (minor)
- 2026-10-13: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Multiple US endpoints experiencing timeouts and latency (major)
- 2026-10-13: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Instant Voice Clone creation failures (minor)
- 2026-10-12: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported TTS failures and increased latency (minor)
- 2026-10-08: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Increased Dubbing Latency and Failure Rate (major)
- 2026-10-08: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Agent SIP Conversation Disruption (major)
- 2026-10-08: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Music 2.5 endpoints performance degraded (minor)
- 2026-10-06: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported EU Agents disruption in SIP calls (major)
- 2026-10-06: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported increase in latency (minor)
- 2026-09-29: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Agents, STT, and Creative Platform: Increased Latency, Conversation Failures, and STT Failures (major)
- 2026-09-28: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Increased latency for Speech to Text API requests (minor)
- 2026-09-28: [ElevenLabs](https://thirdpartyindex.com/vendors/elevenlabs#status), which Yeastar lists as a subprocessor, reported Agents - EU Residency (major)

The subprocessor list as we read it on any date: https://thirdpartyindex.com/labs/time-machine/yeastar

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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