Singapore has long been at the forefront of SMS fraud prevention with the SMS Sender ID Registry (SSIR), a mandatory framework operated by SGNIC under the Infocomm Media Development Authority (IMDA). Since its introduction, registration of alphanumeric sender IDs has always been fully enforced, with unregistered senders facing blocking or having messages relabelled as “Likely-SCAM.”
What’s Changed?
Until recently, some businesses were able to deliver messages to Singapore recipients using indirect means, including SIM-based delivery or international routes that temporarily bypassed the SSIR checks.
That time is now over.
All known workarounds have been closed. Even SIM-originated messages are being filtered or rejected if the sender ID is not properly registered. The networks are applying strict enforcement with no tolerance for unregistered traffic.
What Does This Mean for You?
- Alphanumeric sender IDs must be registered via the SSIR
- Only Singapore-registered companies with a valid UEN can register
- Numeric sender IDs may still deliver but offer no brand recognition
- Unregistered alphanumeric traffic will be blocked or altered
No Registration = No Delivery
If your sender ID is not registered, you should now expect delivery to fail.
What You Can Do
If you are a Singapore-registered business, register your sender ID now via a participating aggregator.
If you are not based in Singapore, you may need to work with a local entity.