Internet of Things (IoT) numbers

In March 2025, Internet of Things (IoT) numbers for both public and private use were designated in the Telecommunications Numbering Plan 2025 to reduce demand of mobile numbers by providing an alternative for machine-to-machine services.

There are 2 types of numbers that can be used for IoT services:

  1. 09 numbers are public numbers used for IoT services that require roaming, messages services or voice telephony.
    Note: These numbers may be used for devices such as Personal Emergency Response Systems (PERS). If you receive an alert or call from a PERS device, the notification may display a number beginning with 09.
  2. 19 numbers are private numbers used for IoT data-only services. The ACMA does not allocate these numbers; they are used for IoT services that are accessible only on one telco’s network.

Charges for communications involving IoT devices depend on the service and your provider. They may differ from standard mobile call or SMS charges.

Last updated: 14 May 2026
print Print this page
 
Back to top
ONLINE ENQUIRY