> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.smstools.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# SenderID registration Austria

# Sender ID registration for Austria
Austria's regulatory authority **RTR** (Rundfunk und Telekom Regulierungs-GmbH) has introduced a **mandatory SMS Sender ID Register**, as part of an anti-fraud and anti-spoofing initiative. All **alphanumeric (alpha) Sender IDs** used to send SMS to Austrian recipients must be registered and approved through the eRTR portal.

**Important dates**
* **1 October 2026** – The regulation enters into force. From this date, SMS sent with an unregistered alpha Sender ID to Austrian numbers are blocked.
* A mandatory **14-day waiting period** applies before a registered Sender ID becomes active. Please register well before the deadline so your sender is active in time.

### How to register
Only operators have access to the RTR platform, so you cannot register directly — **we submit the registration on your behalf**. Complete the registration template and return it to us at [**support@smstools.com**](mailto:support@smstools.com), and we will register your sender.

**Information required for each Sender ID**
* Company name
* Address
* Email address
* Registered service provider
* Sender ID
* Sender ID description/explanation (for example: "Omo" is a brand of Unilever)

**Rules to keep in mind**
* Generic Sender IDs such as "Info" or "Service" are **not permitted**.
* Sender IDs are **case-sensitive**: if "SAMSUNG" is registered, a variant like "SaMsunG" is blocked. Registering a different casing of an existing sender requires an additional explanation.
* Up to **40 Sender IDs** per end customer within a six-month period.
* Once a Sender ID is registered by one provider, all other providers must enable its delivery. Unregistered Sender IDs are blocked.
* **Registration is free** — there are no additional charges.

**Good to know**
Registration is tied to your company and the Sender ID itself, regardless of which aggregator delivers the traffic. Our role is to forward your details to RTR; if RTR needs any clarification, they will contact your company directly using the contact information you provided.

**Questions?**
Contact us at [support@smstools.com](mailto:support@smstools.com) and we'll be happy to help you register in time.