Outage in Vonage API

China SMS - Delivery degradation of Pre-Registered brands

Resolved Minor

March 19, 2026 - Started 10 days ago - Lasted about 9 hours
Official incident page

Incident Report

Summary AI Generated

Vonage API experienced SMS delivery degradation for domestic pre-registered brands sending messages to China, affecting the SMS APAC service. The issue lasted 8.9 hours while Vonage worked with carrier partners to identify and implement a fix. The incident was resolved after monitoring confirmed the fix was successful.

Please be advised that we are observing SMS delivery degradation for domestic pre-registered brands towards China. We are working with our carrier partners to resolve the issue and will issue an update as soon as more information becomes available. Please contact support@api.vonage.com if you have any questions

Components affected

Vonage API SMS APAC

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Latest Updates ( sorted recent to last )

RESOLVED 10 days ago - at 03/20/2026 01:40AM

This incident has been resolved.

MONITORING 10 days ago - at 03/20/2026 01:11AM

A fix has been implemented and we are monitoring the results.

INVESTIGATING 10 days ago - at 03/19/2026 04:49PM

Please be advised that we are observing SMS delivery degradation for domestic pre-registered brands towards China.

We are working with our carrier partners to resolve the issue and will issue an update as soon as more information becomes available.

Please contact support@api.vonage.com if you have any questions

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