> For the complete documentation index, see [llms.txt](https://docs.colt.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.colt.net/info/porting-information.md).

# PORTING INFORMATION

Voice services

To help keep things consistent when your switching to our services, number portability is available for both retail and wholesale services. If you wish to keep your existing numbers when using our Voice, VoIP or IN Services, you must follow the instructions listed below to bring these numbers over to the Colt network.

On this page, you will find all the information you need to do this, alongside country-specific information and other helpful resources.

### GENERAL RESOURCES

#### COLT PORTING DESK CONTACT ESCALATION MATRIX

Who to contact in the event of any issues affecting your service, sorted by country.

{% file src="/files/dWOes6rzOW4uYdHANTLs" %}

#### PORTING MATRIX

Our information matrix for all types of ports available with us.

{% file src="/files/hMK4Klv9sN04rScrKSqo" %}

#### COUNTRY PORTING COVERAGE (EUROPE)

Porting agreements that we have in place with carriers across Europe.

{% file src="/files/qWYSkeCHAmQ2a0zbXfmf" %}

### RECENT UPDATES

<table><thead><tr><th width="170">DATE</th><th>CATEGORY</th><th>ACTIONS</th></tr></thead><tbody><tr><td>September 23, 2026</td><td>Porting Matrix Updates and LOA update for RO</td><td>The Porting Matrix has been updated to show updated port out details for Norway (global geographic port-out info) and updated the LOA for Romania </td></tr><tr><td>July 30, 2026</td><td>Porting Matrix Updates<br>LOA updates for PL and CZ</td><td>The Porting Matrix has been updated with the following changes: updated lead time for surrendering carriers to accept porting in CZ (for GSIP and IN), and added additional documents required for Greece porting (for GSIP).<br>Updated LOAs have been uploaded for CZ and PL</td></tr><tr><td>May 6, 2026</td><td>Porting Matrix</td><td>The Porting Matrix has been updated with the following changes: updated rejections reasons for CZ port out (GSIP + IN), updated port out details for Singapore (GSIP), and updated port details for South Korea (GSIP)</td></tr><tr><td>February 26, 2026</td><td>Porting Matrix Updates</td><td>The Porting Matrix has been updated with the following changes: (1)Additional information has been added for South Korea (Global Geo)</td></tr><tr><td>January 6, 2026</td><td>Migration to new docs site</td><td>All porting information has now been migrated to the new Docs platform. Please use the feedback tools on this site to provide your feedback.</td></tr><tr><td>September 5, 2025</td><td>Global porting forms</td><td>(1) The Romanian LOA has now been added into the Global IN section. (2) An additional porting form for Bulgaria has been uploaded.</td></tr></tbody></table>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.colt.net/info/porting-information.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
DATE	CATEGORY	ACTIONS
September 23, 2026	Porting Matrix Updates and LOA update for RO	The Porting Matrix has been updated to show updated port out details for Norway (global geographic port-out info) and updated the LOA for Romania
July 30, 2026	Porting Matrix Updates LOA updates for PL and CZ	The Porting Matrix has been updated with the following changes: updated lead time for surrendering carriers to accept porting in CZ (for GSIP and IN), and added additional documents required for Greece porting (for GSIP). Updated LOAs have been uploaded for CZ and PL
May 6, 2026	Porting Matrix	The Porting Matrix has been updated with the following changes: updated rejections reasons for CZ port out (GSIP + IN), updated port out details for Singapore (GSIP), and updated port details for South Korea (GSIP)
February 26, 2026	Porting Matrix Updates	The Porting Matrix has been updated with the following changes: (1)Additional information has been added for South Korea (Global Geo)
January 6, 2026	Migration to new docs site	All porting information has now been migrated to the new Docs platform. Please use the feedback tools on this site to provide your feedback.
September 5, 2025	Global porting forms	(1) The Romanian LOA has now been added into the Global IN section. (2) An additional porting form for Bulgaria has been uploaded.