# SendGrid: Voice Call Failures between a Subset of Twilio South Africa Phone Numbers and Multiple Networks in South Africa

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-10-13 12:57 UTC · Resolved: 2026-10-13 18:57 UTC · Duration: 6.0 h
- Updates: 6 · Affected components: CARRIER NETWORK - Voice, Middle East & Africa, Voice, Middle East & Africa
- [Vendor status page: https://stspg.io/6rh8s49r12f0](https://stspg.io/6rh8s49r12f0)
- [Company: SendGrid](https://rewindex.com/company/sendgrid.md)

## Timeline of updates

- **investigating** 2026-10-13 12:57 UTC: Twilio customers may be experiencing voice call failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in South Africa. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- **investigating** 2026-10-13 14:19 UTC: Twilio customers may be experiencing voice call failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in South Africa. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
- **identified** 2026-10-13 14:21 UTC: Twilio customers may be experiencing voice call failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in South Africa. 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.
- **monitoring** 2026-10-13 15:14 UTC: We have observed a recovery in voice calls between a subset of Twilio Phone Numbers and network subscribers on multiple networks in South Africa and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- **monitoring** 2026-10-13 17:15 UTC: We have observed a recovery in voice calls between a subset of Twilio Phone Numbers and network subscribers on multiple networks in South Africa and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
- **resolved** 2026-10-13 18:57 UTC: The incident has been resolved and voice calls between a subset of Twilio South Africa Phone Numbers and network subscribers on affected networks in South Africa are operating normally.


---
Canonical: https://rewindex.com/company/sendgrid/incidents/8r6hqst5pydb · Markdown: https://rewindex.com/company/sendgrid/incidents/8r6hqst5pydb.md · JSON: https://rewindex.com/api/v1/companies/sendgrid/incidents/8r6hqst5pydb · Generated 2026-10-18T11:29:18.998Z