SMS Number Masking

What is Number Masking?

Number masking allows you to send SMS using a numeric string as your Sender ID — for example, a specific 10–11 digit number — rather than an alphanumeric name. This is sometimes used when businesses want to display a consistent numeric caller-like ID to recipients.

Current Regulations in Malaysia

Malaysian mobile operators no longer allow alphanumeric sender IDs for standard bulk SMS routes. This policy has been in place for a number of years. All standard bulk SMS in Malaysia now use either a numeric sender ID or a registered Sender ID via short code.

Short codes (Level 2) operated directly by Telcos such as Maxis, Celcom, or Digi can still use alphanumeric sender IDs — that is why you may receive messages with sender names like "MYBANK" or "SHOPEE" on your phone. These are sent through Telco-operated short code channels, not through standard bulk SMS routes.

Important Limitations

• Number masking is not compatible with 2-Way SMS — recipients cannot reply to a masked number and have the reply reach your email
• Sender ID display is subject to mobile operator policies and may be substituted
• For registered branded Sender IDs, consider our short code service — contact us for details

Learn more: iSMS Platform Features →  |  Contact Us for Short Code →