🇨🇿 Czech Republic Number Porting Guide

​

Initial Overview

​

1. Supported Number Types

​

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.

​

3. Letter of Authorization

You’ll need to submit a signed Letter of Authorization (LOA). If a template is available for this country, it downloads inside the Documents step of your porting request; otherwise we’ll email you the correct template after you submit. Sign it and upload it with your request. (Other document requirements listed below.)

​

4. Timelines & Pricing

---

​

Required Documents For Number Porting

• Signed LOA
• OKU Code (mandatory; request directly from your current provider before submitting the porting request)
• Recent invoice (from your current provider)

​

What is the OKU Code?

OKU (in Czech: Ověřovací Kód Účastníka) is a unique porting authorization code used in the Czech Republic to confirm the end user’s consent for number transfer.

• It is assigned by the current (losing) provider to the number holder
• Functions similarly to a PAC or PIN code in other countries
• It confirms ownership and authorization for the number to be ported

You must request the OKU code from your current provider before submitting the porting request to CloudTalk. You’ll enter your OKU code in the Verification step of your porting request.

---

​

Porting Process Overview

1. Submit Your Porting Request
   Submit your request in the CloudTalk Dashboard under Numbers > Port existing number.
2. Initial Review
   Cloudtalk team’ll verify number portability and confirm the next steps.
3. Documentation Collection
   Complete and sign the LOA (Letter of Authorization), and provide a recent invoice from your current telecom provider.
4. Submission to Carrier
   CloudTalk submits your request to our partner carrier, who then forwards it to your current provider.
5. 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

---

​

On Porting Day

• The number is activated in your CloudTalk account
• Your former provider deactivates the number
• CloudTalk billing begins the same day
• We recommend notifying your previous provider to prevent duplicate charges

---

Need Help? For further assistance, please refer to:

• CloudTalk Porting Process Overview
• CloudTalk Recommendations for a Smooth Port
• 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!