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

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 Austria mobile

Ready to Port?
You can submit your request to our porting team using our International Porting Form.

If you have numbers from other countries, check Global Porting coverage for details.

Required Documents For Number Porting

✅ Local Numbers

Signed LOA
- Template and English guide attached at the bottom of this guide as a .zip
Latest invoice from the current service provider
Other Compliance Documents:
- Business registration from Austria showing an address that matches the number’s locality (Austria Handelsregister extract, Gewa etc)
- ID of the authorized representative (must be one of the following):
  - Government-issued ID or Passport
  - Bank confirmation of identity

✅ National Numbers

Signed LOA
- Attached at the bottom of this guide as a .zip
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

Number Porting Process & Details

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

⚠️ Porting timelines may be delayed if submitted information does not match your current provider's records.

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 & How to Fix Them

Contact your current service provider before submitting a porting request to CloudTalk. They can advise you on all information regarding your numbers

Read the section "What Should You Verify With Your Current Provider?" in CloudTalk Recommendations for a Smooth Port to know what to check with them in advance.

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