# Sinch: Whatsapp Service Outage

> Sinch status incident “Whatsapp Service Outage” on 2021-12-22: impact minor (vendor’s label), 2.7 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/sinch/incidents/7w40zwv05y03
Last updated: 2021-12-22T15:52:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2021-12-22 13:12 UTC · Resolved: 2021-12-22 15:52 UTC · Duration: 2.7 h
- Updates: 1
- [Vendor status page: https://status.sinch.com/incidents/7w40zwv05y03](https://status.sinch.com/incidents/7w40zwv05y03)
- [Company: Sinch](https://rewindex.com/company/sinch.md)

## Part of an outage event

- [AWS us-east-1 outage, Dec 22, 2021: 25 vendors, 28 incidents](https://rewindex.com/events/2021-12-22-aws-us-east-1)
- This incident depends on AWS (declared dependency, named as a cause before); it did not name AWS. (hop 1, posted +30 min vs the first vendor naming AWS)

```mermaid
flowchart LR
  root["AWS us-east-1<br/>own incident not archived"]:::inferred
  h1["Within an hour<br/>8 vendors, 6 blamed AWS<br/>Firebolt, Bitbucket, HubSpot, CircleCI +4"]:::blames
  root --> h1
  h4["1 to 4 hours later<br/>1 vendor<br/>Confluent"]:::names
  root --> h4
  dr["Known dependency<br/>6 vendors<br/>Sinch, Webflow, Datadog, ActiveCampaign +2"]:::hop2
  root -.->|"depends on AWS"| dr
  me["Sinch (this incident)<br/>posted +30 min"]:::me
  root -.->|"known dependency"| me
```

_Detected automatically from incidents that started together and named the same provider; a link means one incident named another vendor, not a confirmed cause._

## Timeline of updates

- **resolved** 2021-12-22 15:52 UTC: Dear client, We are now observing stable traffic and the service is now working as intended. Start time: 12.20 UTC End time: 14.40 UTC Please contact support@sinch.com should you require further information or assistance.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._

## Cite this

Status incident (vendor impact label: minor) posted by Sinch, started 2021-12-22 13:12 UTC, resolved after 2.7 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/sinch/incidents/7w40zwv05y03
- Citation: Sinch, “Whatsapp Service Outage” (2021-12-22 13:12 UTC). Archived by Rewindex: https://rewindex.com/company/sinch/incidents/7w40zwv05y03 (CC BY 4.0).
- Markdown link: `[Sinch: Whatsapp Service Outage (2021-12-22)](https://rewindex.com/company/sinch/incidents/7w40zwv05y03)`


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Canonical: https://rewindex.com/company/sinch/incidents/7w40zwv05y03 · Markdown: https://rewindex.com/company/sinch/incidents/7w40zwv05y03.md · JSON: https://rewindex.com/api/v1/companies/sinch/incidents/7w40zwv05y03 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T14:42:27.757Z