Outage in Telesign

Operator Alert - South Korea (KR) - KTF (450/02;04;08)

Resolved Major

April 28, 2026 - Started about 22 hours ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

KTF network operator in South Korea experienced network issues that caused delays in SMS message delivery for end users. The incident lasted 43 minutes, from 11:52 AM to 12:35 PM PST on April 28, 2026. The network issues were resolved and SMS services returned to normal functionality.

Start Time: 11:52 AM PST - 28/04/26 End Time: Ongoing We received notification that KTF (450/02;04;08) from South Korea (KR) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution. SF 01163657

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Latest Updates ( sorted recent to last )

RESOLVED about 21 hours ago - at 04/28/2026 07:51PM

Start Time: 11:52 AM PST - 28/04/26
End Time: 12:35 PM PST - 28/04/26

We received notification that the network issues previously reported by KTF (450/02;04;08) from South Korea (KR) have been resolved. KTF (450/02;04;08) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.

SF 01163657

INVESTIGATING about 22 hours ago - at 04/28/2026 06:55PM

Start Time: 11:52 AM PST - 28/04/26
End Time: Ongoing

We received notification that KTF (450/02;04;08) from South Korea (KR) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.

SF 01163657

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