This guide outlines the supported number types, required documents, hosting rules, and porting timelines for Austrian numbers.

Initial Overview

1. Supported Number Types

Number Type	Example Prefixes
Local	Varies by region, +43-1 - +43-7*
National	+43720
Toll-Free	+43800

⚠️ Mobile numbers (+43 6) are not portable to VoIP operators. If you already have a mobile number you would like to use for outbound calls on CloudTalk, we can create a Virtual Caller ID of your existing number or help you buy a new Austrian mobile.

2. Submit Your Request

You can request number porting using the International Porting Form.

Looking to port numbers from other countries? See Global Porting Coverage.

3. Download LOA Template

You’ll need to submit a signed Letter of Authorization - LOA Template is added as a .zip at the end of this guide.

(Other document requirements listed below.)

4. Timelines & Pricing

Number Type	Estimated Duration	Pricing
Local	16 business days	€30 per request, €35 per number
National	16 business days	€30 per request, €35 per number
Toll-Free	16 business days	€0 per request, €65 per number

⚠️ Timelines may vary if submitted details do not match your current provider’s records.

Required Documents For Number Porting

LOA templates (.zip) are attached at the bottom of this guide.

✅ Local Numbers

Signed LOA
Recent invoice (from current provider)

Compliance:

Business registration with a local address (e.g. Handelsregister, Gewa)
Authorized representative’s ID (passport, gov. ID, or bank confirmation)

✅ National Numbers

Signed LOA
Latest invoice from the current service provider

✅ Toll-Free Numbers

Signed LOA -(Will be provided over email after submitting your request. You can proceed with the International Porting Form without attaching LOA)
Latest invoice from the current service provider

Porting Process Overview

Submit Your Porting Request
Send your request to the CloudTalk Porting Team to begin the process.
Initial Review
Cloudtalk team'll verify number portability and confirm the next steps.
Documentation Collection
Complete and sign the LOA (Letter of Authorization), and provide a recent invoice from your current telecom provider.
Submission to Carrier
CloudTalk submits your request to our partner carrier, who then forwards it to your current provider.
Approval or Rejection
- If approved, Cloudtalk team will confirm the porting date (typically 2–4 business days in advance).
- If rejected, Cloudtalk team will share the reason and guide you on how to correct and resubmit the request.

Common Rejection Reasons

Issue	How to Fix
Mismatched info across the LOA, invoice, or ID	Ensure all submitted documents use the same business name and address
Outdated invoices	Submit an invoice issued within the last 30 days
Incomplete or missing business registration	Provide an up-to-date business registration certificate
Local numbers with a mismatched address	Confirm that the address matches the number’s local area code and provider records
Inactive numbers	Keep the number active with your current provider until the port is completed