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Outage in Vonage API

Japan SMS - Delivery degradation affecting NTT Docomo network

Resolved Minor
January 24, 2026 - Started 3 months ago - Lasted about 13 hours
Official incident page

Incident Report

Please be informed that SMS delivery degradation was observed between 22:30 UTC on 24 Jan and 00:30 UTC on 25 Jan towards NTT Docomo Network. It has recovered. This did not impact the domestic registration traffic. Please contact support@api.vonage.com if you have any questions.

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RESOLVED 3 months ago - at 01/25/2026 03:01AM

Please be informed that SMS delivery degradation was observed between 22:30 UTC on 24 Jan and 00:30 UTC on 25 Jan towards NTT Docomo Network. It has recovered. This did not impact the domestic registration traffic.

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

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