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CompaniesSinchIncidents

Sinch: Whatsapp Service Outage

MinorStatus: resolvedStarted Resolved (2.7 h)1 updatestatus.sinch.com (opens in new tab)
Part of an outage event

AWS us-east-1 outage, Dec 22, 2021 · 25 vendors, 28 incidents

Sinch’s 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)

Swipe sideways to see the whole diagram.

depends on AWSknown dependencyAWS us-east-1own incident not archivedWithin an hour8 vendors, 6 blamed AWSFirebolt, Bitbucket, HubSpot, CircleCI +41 to 4 hours later1 vendorConfluentKnown dependency6 vendorsSinch, Webflow, Datadog, ActiveCampaign +2Sinch (this incident)posted +30 min
depends on AWSknown dependencyAWS us-east-1own incident not archivedWithin an hour8 vendors, 6 blamed AWSFirebolt, Bitbucket, HubSpot,CircleCI +41 to 4 hours later1 vendorConfluentKnown dependency6 vendorsSinch, Webflow, Datadog,ActiveCampaign +2Sinch (this incident)posted +30 min
Sinch is outlined in red. Groups show up to a few vendors each; the event page lists every incident.
Mermaid source
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

Full event: timeline, evidence and all vendors →

Detected automatically from incidents that started together and named the same provider. A link means one vendor’s incident named another, not a confirmed cause.

Timeline of updates

  1. resolved

    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 Sinch’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.

Archive proof

Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert.

How the archive is checked, and what it cannot prove.

This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.

Impact, status and times are the vendor’s own, as last archived. View on status.sinch.com (opens in new tab).

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).

Title
Whatsapp Service Outage
Vendor
Sinch
Date
URL
https://rewindex.com/company/sinch/incidents/7w40zwv05y03

Sinch profileRecent Sinch incidentsAll outages on December 22, 2021Sinch in December 2021MarkdownJSON