The Australian Communications and Media Authority (ACMA) is introducing important new rules that affect how businesses use alphanumeric sender IDs (for example: "ACME", "myGov" or "CityClinic" instead of a mobile number) when sending SMS in Australia.

These changes are designed to combat SMS scams, protect consumers and ensure only verified organisations are able to use brand names in the sender field.

All businesses sending SMS with alphanumeric sender IDs will need to register their IDs with the ACMA's SMS Sender ID Register.

What’s changing?

• The ACMA will require all alphanumeric sender IDs to be registered in order to send SMS in Australia.
• The Register will help prevent scam activity by blocking unauthorised or misleading use of brand names.
• Unregistered sender IDs will be over-stamped (replaced) with "Unverified".
• SMS sent from Telco's not participating in the register will be blocked.

Key dates

Date	Action
30 September 2025	The ACMA introduces the new industry standard.
15 October 2025	Originating Telcos can apply to participate in the register.
30 November 2025	Approved Originating Telcos will start registering eligible businesses.
1 July 2026	Unregistered Sender IDs will be be over-stamped/ replaced with "Unverified" and traffic from non-participating Telco's blocked.

What you need to do

If you are currently sending SMS using an alphanumeric sender ID (e.g. "ACME", “BANKNAME”, “MYCLINIC”):

• Review your sender IDs – identify all IDs in use across systems and campaigns.
• Update ABN or company registrations – registration requires proof of brand ownership and authorisation.
• Register with the ACMA's SMS Sender ID Register.

What happens if you don’t register?

• Unregistered alphanumeric sender IDs appear as coming from "Unverified" on recipients handsets.
• Traffic sent through Telco's not participating in the register will be blocked.
• Using unregistered or misleading sender IDs may also expose your business to compliance penalties.

How Kudosity can help

We are actively working with ACMA and carriers to ensure our customers can transition smoothly. We will:

• Provide clear instructions on how to register your alphanumeric sender IDs.
• Assist International and Non-ABN Entities as a Certified Telco
• Assist with documentation and submission.
• Keep you informed of all key dates and compliance deadlines.

Next steps

1. Identify your Principal Authority or an Authorised Administrator (listed on your ABN)
2. Login to your account
3. Navigate to Senders
4. Audit your Sender IDs against the new ACMA: Alphanumeric Sender ID Requirements
5. Click "Add Sender ID"
6. Complete the form
7. Create an ACMA Assist account after receiving the email (refer to step 1)
8. Confirm the relevant sender IDs in ACMA Assist