# Twilio: Incident updated: Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina

> Incident updated: Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina. Detected 2026-11-05 by Rewindex: what changed on Twilio’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/r996f1bbc27f33f
Last updated: 2026-11-05T19:14:00Z

**Summary:** _summary pending_
- Kind: Incident update · Label: Normal progress (typesafe/jev-1.13-20260917)
- Changed: 2026-11-05 19:14 UTC · Detected: 2026-11-05 19:14 UTC
- [Source: https://status.twilio.com/incidents/ry5cj1mk6r60](https://status.twilio.com/incidents/ry5cj1mk6r60)
- [Company: Twilio](https://rewindex.com/company/twilio.md)
- Versions: before incident\_version:125/ry5cj1mk6r60@b58b66e577b9 → after incident\_version:125/ry5cj1mk6r60@66cf26b57174
- Change 1 of 2 for this incident

Incident page (full timeline): [Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina](https://rewindex.com/company/twilio/incidents/ry5cj1mk6r60.md)
## What changed

**1. Changed: Title**

```diff
- Voice Call Failures from a Subset of Twilio Mobile Numbers to Argentina
+ Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina
```

**2. Changed: Status**

```diff
- investigating
+ identified
```

**3. Added: Update** (identified) · 2026-11-05 19:12 UTC

```diff
+ Twilio customers may be experiencing voice call failures from a subset of Twilio Mobile Numbers to Telefonica network subscribers in Argentina. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-11-05 19:14 UTC | Incident updated: Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina (this change) | Normal progress |
| 2026-11-05 20:24 UTC | [Incident updated: Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina](https://rewindex.com/change/rc38673f277a6b6.md) | Normal progress |

Next: [change](https://rewindex.com/change/rc38673f277a6b6.md) · All Twilio changes: [timeline](https://rewindex.com/company/twilio/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._

## Cite this

Incident updated: Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina on Twilio’s status page, changed 2026-11-05 19:14 UTC (change 1 of 2).

- Canonical URL: https://rewindex.com/change/r996f1bbc27f33f
- Citation: Twilio, “Incident updated: Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina” (2026-11-05 19:14 UTC). Archived by Rewindex: https://rewindex.com/change/r996f1bbc27f33f (CC BY 4.0).
- Markdown link: `[Twilio: Incident updated: Voice Call Failures from a Subset of Twilio Mobile Numbers to Telefonica Argentina (2026-11-05)](https://rewindex.com/change/r996f1bbc27f33f)`


---
Canonical: https://rewindex.com/change/r996f1bbc27f33f · Markdown: https://rewindex.com/change/r996f1bbc27f33f.md · JSON: https://rewindex.com/api/v1/changes/r996f1bbc27f33f · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-06T17:01:23.410Z