Conversion of unregistered SMS SenderIDs to “Likely-SCAM” on 30 January 2023, from 2100hrs

Monday, 30 January 1 minute

The maintenance is now complete. Thanks for your patience.


The scheduled maintenance is now underway. We'll keep you updated on our progress.


The full Singapore SMS Sender ID Registry (“SSIR”) takes effect on 30 January 2023, from 2100hrs We will be deploying an system update to automatically convert unregistered SMS SenderIDs to “Likely-SCAM”. No service impact is expected. Please contact us if assistance is needed.

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Began at:

Affected components
  • Message Delivery
    • SMS message delivery