# Twilio: SMPP Connection Failure Affecting Registered Sender ID Messages to China Over Multiple Networks

> Twilio status incident “SMPP Connection Failure Affecting Registered Sender ID Messages to China Over Multiple Networks” on 2021-05-09: impact minor (vendor’s label), 17 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/f6z37f8q3qfw
Last updated: 2021-05-09T21:12:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2021-05-09 04:20 UTC · Resolved: 2021-05-09 21:12 UTC · Duration: 17 h
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/f6z37f8q3qfw](https://status.twilio.com/incidents/f6z37f8q3qfw)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2021-05-09 21:12 UTC: Connection failures for registered Sender ID messages to China have been resolved and the service is operating normally at this time. This incident is now closed.

_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 Twilio, started 2021-05-09 04:20 UTC, resolved after 17 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/f6z37f8q3qfw
- Citation: Twilio, “SMPP Connection Failure Affecting Registered Sender ID Messages to China Over Multiple Networks” (2021-05-09 04:20 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/f6z37f8q3qfw (CC BY 4.0).
- Markdown link: `[Twilio: SMPP Connection Failure Affecting Registered Sender ID Messages to China Over Multiple Networks (2021-05-09)](https://rewindex.com/company/twilio/incidents/f6z37f8q3qfw)`


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Canonical: https://rewindex.com/company/twilio/incidents/f6z37f8q3qfw · Markdown: https://rewindex.com/company/twilio/incidents/f6z37f8q3qfw.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/f6z37f8q3qfw · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T15:46:43.333Z