What Is SMS Masking and How Does It Work?

When a customer gets an SMS from 'BANKABC' instead of '+62812…', they instantly know who sent it. That's SMS Masking: messages delivered with an alphanumeric Sender ID, your brand name, instead of a plain mobile number.

What is SMS Masking?

SMS Masking, technically an alphanumeric Sender ID, lets a business register a short text string (up to 11 characters) as the sender name on every SMS it sends. Instead of a generic number, recipients see your company, brand, or product name. In Indonesia it is a one-way channel: recipients can't reply to it.

How does it work?

1. Register your brand name and supporting documents, which are pre-validated against the six operators.
2. Each operator reviews and approves the Sender ID, this takes 3–14 working days.
3. Once approved, we will notify you that the Sender ID is active across all providers and ready to use.
4. Go live, send from your brand name and track each message in real time.

Why businesses use it

• Trust: a recognizable brand name reassures recipients the message is genuine.
• Anti-fraud: it's far harder for scammers to impersonate a registered Sender ID.
• Brand recall: every message reinforces your name, not an anonymous number.
• Fewer ignored messages: branded SMS is less likely to be dismissed as spam.

What you need to get started

You'll need a valid business identity (NIB) and supporting documents, plus a minimum deposit of Rp 2,000,000 for the registration. Each of the six operators, Telkomsel, Indosat, XL, Axis, Tri, and Smartfren, is registered separately, which is why approval spans 3–14 working days.

Since 2012, Zenziva has handled this registration for thousands of Indonesian businesses, managing the paperwork with each operator and providing one API to reach them all.