Outage in Telesign

Operator Alert - Russia (RU) - Mobile TeleSystems (MTS) (250/01) 09/19/26

Resolved Minor

September 19, 2026 - Started 1 day ago - Lasted about 4 hours
Official incident page

Incident Report

Summary AI Generated

Mobile TeleSystems (MTS) in Russia experienced a network degradation that caused SMS delivery delays for approximately 4 hours on September 19, 2026 (02:10–06:10 PDT). The issue affected end users receiving SMS messages through the MTS network. Full service was restored by 06:10 PDT with all systems returning to normal operation.

Start Time: 02:10 PDT - 09/19/26 End Time: Ongoing We are currently observing a quality degradation towards Mobile TeleSystems (MTS) (250/01) in Russia (RU), which may cause delays in SMS delivery. We will inform you once the operator has come to a resolution. SF 01238766

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Latest Updates ( sorted recent to last )

RESOLVED 1 day ago - at 09/19/2026 01:13PM

Start Time: 02:10 PDT - 09/19/26
End Time: 06:10 PDT - 09/19/26

Network issues previously reported for Mobile TeleSystems (MTS) (250/01) from Russia (RU) have been resolved. Mobile TeleSystems (MTS) (250/01) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.

SF 01238766

INVESTIGATING 1 day ago - at 09/19/2026 09:18AM

Start Time: 02:10 PDT - 09/19/26
End Time: Ongoing

We are currently observing a quality degradation towards Mobile TeleSystems (MTS) (250/01) in Russia (RU), which may cause delays in SMS delivery. We will inform you once the operator has come to a resolution.

SF 01238766

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