SMS Sender ID Regulation in Ireland (ComReg)

The Commission for Communications Regulation (ComReg) has introduced new rules to reduce scam texts and calls in Ireland.

Under these rules, all businesses sending SMS messages using a Sender ID (for example, a company name instead of a number) must register that Sender ID.

Why This Matters

If a Sender ID is not registered, messages may be changed or blocked.

Key Dates

• 3 July – 2 October 2025 (Transition Phase)
  Messages sent with unregistered Sender IDs will be changed to show “Likely Scam” to recipients.
• From 3 October 2025 (Enforcement Phase)
  Messages sent with unregistered Sender IDs will be blocked completely.
• 14th April 2026 - 5 Digit Number Registration Enforced
  Businesses also need to register 5-digit numbers with the network as Sender Names. It needs to be done before 14 April 2026 to avoid the 5XXXX Sender ID being modified to “Likely Scam” on the A2P SMS Channel.

NUACOM and Sender ID Registration

Nuacom is an authorised SMS provider in Ireland and has already taken part in early registration for customers.

This helps customers secure their Sender IDs in advance and avoid disruption to SMS services.

What Customers Need to Do (Simple Overview)

To use a Sender ID with NUACOM, two approvals are required:

1. Register your business with the ComReg Sender ID Registry
2. Approve NUACOM as your SMS provider

3. 

Step 1: Register Your Business with ComReg

If you have never registered a Sender ID before, you must first create an account with ComReg.

What you’ll need:

• Company or organisation details
• Business contact email and phone number
• Proof of business (for example, CRO number, tax number, or other documents)

You can register at:
👉 http://senderid.comreg.ie

Once approved, ComReg will email you to activate your account.

Step 2: Approve NUACOM as Your SMS Provider

After NUACOM submits your Sender ID request, ComReg will email you asking to approve NUACOM.

What to do:

1. Log in to senderid.comreg.ie
2. Review the Sender ID request
3. Click Approve for NUACOM
4. Confirm the approval

Once approved, NUACOM can send SMS messages using your Sender ID.

Changing or Reviewing Approvals

If you skipped the approval email or need to make changes later:

1. Log in to the ComReg portal
2. Go to My Sender IDs
3. Select your Sender ID
4. Approve or update SMS provider permissions as needed
   

Need Help?

If you need help with Sender ID registration or approvals, NUACOM Support is available:

• Submit a support ticket, or
• Call 777 from your NUACOM phone or app

Quick Summary

• Sender IDs must be registered to send SMS in Ireland
• Only applies to the customers that are operating in Republic of Ireland, using ROI phone numbers.
• Unregistered IDs will be flagged, then blocked
• Register with ComReg and approve NUACOM
• Do this before October 2025 to avoid disruption

• SMS Sender ID Registry SIDO Guide ver 1-1.pdf1 MB
• SMS Sender ID Registry Public Guide ver 1-1.pdf900 KB