Singapore Sender ID Requirements

Under Singapore’s Full SMS Sender ID Registry (SSIR) Regime, all organizations that send SMS messages to Singapore mobile numbers must now register the alphanumeric sender IDs they use with the Singapore Network Information Centre (SGNIC), the national registry responsible for authorizing and regulating sender ID registration. Registration is required for alpha and alphanumeric sender IDs, dedicated short codes, and dedicated virtual long numbers. 

Organizations must register directly with SGNIC. You must first create an account, then reserve sender IDs via the SSIR Portal. Sender IDs are registered on a first-come, first-served basis.

Beginning January 31, 2023, only registered sender IDs will be passed through as is. Unregistered sender IDs will be replaced with “Likely-SCAM.” 

Beginning July 1, messages with registered sender IDs will be passed through and those with unregistered sender IDs will be blocked.

How to create an account

To register your sender IDs you must first create an account on the SSIR portal. 

Only organizations with a local unique entity number (UEN) as issued by relevant government agencies can register with the SSIR. Foreign-based businesses can obtain a UEN by registering with the Accounting and Corporate Regulatory Authority (ACRA). A foreign business can register as a local subsidiary or as a foreign branch office. Foreign-based businesses can register for sender IDs with SSIR via their local subsidiary or foreign branch office as long as the local subsidiary or foreign branch office can present a valid UEN. Non-business organizations (such as charities or religious bodies) can register with agencies that issue UENs to these types of organizations. 

SGNIC will notify you when your account has been approved, after which you can log in to the portal and reserve sender IDs. The Admin account holder in the portal may also create User accounts for your organization.

How to register sender IDs

Before you begin entering your registration information, review the rules for valid sender IDs, then enter your information in the SSIR Portal.

Plivo customers should specify 8x8 International Pte Ltd a.k.a. Wavecell as their Participating Aggregator (PA).

At the same time as you register your sender IDs, please create a Letter of Authorization (LOA) and submit it to Plivo as an attachment to a support ticket. PFA the sample LOA as a template.


You can reserve sender IDs at no cost through January 31. SSIR will bill organizations for setup fees and sender IDs beginning February 1; an invoice will be emailed to the organization’s designated billing contact.





Setup fee (one-time)


Chargeable on the first day of the calendar month immediately following the commencement date (billing start date)

Listing of sender IDs during a billing year

S$200 per whitelisted sender ID

For organizations that onboard via the SSIR system by January 31, 2023, the first billing year is from February 1, 2023, to January 31, 2024.

For organizations that onboard after January 31, 2023, the first day of their billing year is the first day of the calendar month following the month of onboarding. For example, an organization that onboards on March 15, 2023, will have its first billing year from April 1, 2023, to March 31, 2024.

Subsequent annual fees will be charged on the first day of the next billing year until the termination of the user agreement.

The annual fee for a billing year will not be prorated even if a sender ID is listed for less than a full calendar year. Organizations that remove sender IDs will not be refunded for the remaining time in a billing year.


Was this article helpful?
0 out of 0 found this helpful
Didn’t find what you are looking for? Create new ticket