Subset of Inbound Calls With Invalid ST/SH Passports Being Rejected
Dec 11, 20:49 UTCDec 11, 20:49 UTC
Duration
0m
Impact
Informational
Root cause
Bug
Twilio, 90 days
554 incidents
Affected
Not listed by the vendor.
Final update
From 2025-11-25 19:25 UTC until 2025-12-11 00:23 UTC, a small subset of inbound calls from carriers sending invalid STIR/SHAKEN PASSporTs were erroneously rejected. These calls should have been accepted and completed with a 32021 (warning), but due to a software bug they were instead classified as 32020 (error) and blocked. The issue has been mitigated and inbound calls with invalid PASSporTs are now processed normally.
Timeline
- Resolved · Dec 11, 20:49 UTC
From 2025-11-25 19:25 UTC until 2025-12-11 00:23 UTC, a small subset of inbound calls from carriers sending invalid STIR/SHAKEN PASSporTs were erroneously rejected. These calls should have been accepted and completed with a 32021 (warning), but due to a software bug they were instead classified as 32020 (error) and blocked. The issue has been mitigated and inbound calls with invalid PASSporTs are now processed normally.
More from Twilio
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|---|---|---|---|
| Sep 2503:49 UTC | SMS Delivery Delays from Twilio to Claro Brazil | minor | Ongoing |
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| Sep 2420:40 UTC | Event Streams Service Disruption | minor | 5h 44m |
| Sep 2417:55 UTC | SMS Delivery Receipt Delays from a Subset of Twilio Alphanumeric Sender IDs to Ooredoo Algeria | minor | Ongoing |
| Sep 2417:19 UTC | Some Transfer Calls in Elastic SIP Trunking Failing With Error Code 32204 | minor | 43m |
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Also caused by software bug
All| Started | Vendor | Incident | Impact | Duration |
|---|---|---|---|---|
| Sep 1518:57 UTC |  ClickHouse | ClickPipes failing on Kinesis in AWS us-east-1ClickHouse | critical | 29h 46m |
| Aug 819:48 UTC |  Grafana Labs | Alerting expressions pipeline failing when recovery settingsGrafana Labs | minor | 0m |
| Aug 615:22 UTC |  GitHub | Incident with ActionsGitHub | critical | 10h 42m |
| Jul 2314:14 UTC |  Box | [Medium] Issues with Box HubsBox | major | 16m |
| Jun 1719:00 UTC | GitHub | Incident With WebhooksGitHub | none | 0m |
| May 2801:13 UTC | GitHub | Webhook APIs and UI DegradedGitHub | minor | 19m |
Sources: vendors' own status pages, published postmortems and SEC 8-K Item 1.05 filings, read daily. Times as reported. Logos via logo.dev; trademarks belong to their owners.