This guide outlines the supported number types, required documents, hosting rules, and porting timelines for Austrian numbers.
Initial Overview
1. Supported Number Types
⚠️ 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
Request porting directly in the CloudTalk Dashboard: open Numbers > Port existing number and follow the guided steps. All supported number types for this country use the same flow, and you can track your request anytime under Numbers > Porting requests.
Looking to port numbers from other countries? See Global Porting Coverage.
3. Letter of Authorization
Where an LOA is required, the correct template for this country downloads inside the Documents step of your porting request: download it, sign it, and upload it right there. You no longer need a separate template from 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
The correct LOA templates download inside the Documents step of your porting request.
✅ 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 (if a template is not available to download in the Documents step, we will email you the correct template after you submit; you can submit your request without attaching it)
Latest invoice from the current service provider
Porting Process Overview
Submit Your Porting Request
Submit your request in the CloudTalk Dashboard under Numbers > Port existing number.
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 |
On Porting Day
Your number will be activated in CloudTalk
Your previous provider will release and deactivate it
You’ll start receiving inbound calls in CloudTalk
CloudTalk billing begins the same day
Need Help?
For further assistance, please refer to:
Porting Pricing and Coverage - all countries where we offer porting
Country Specific Porting Guides - for our most requested countries
Questions about a request you've already submitted? Open it under Numbers > Porting requests and click Open conversation. You can also reach our Porting team by email. We're always happy to help!