Finland Phone Number Regulatory Documentation Overview

Created by Mike Goodwin, Modified on Mon, 2 Nov at 8:52 AM by Aye Myat

Objective

Learn which information and supporting documents you need to register Finnish mobile and local phone numbers, and how to submit them.

Finland's Transport and Communications Agency (Traficom) requires phone number providers, including our voice provider Twilio, to identify who owns each number.

Starting November 10, 2026, every Finnish mobile and local phone number in your account needs an approved set of regulatory documentation assigned to it. Finnish phone numbers without an approved documentation bundle are at risk of having their traffic blocked and could be removed without notice.

Under Outreach's terms of service, regulatory compliance for the use of phone numbers is the responsibility of the account holder.

Applies To

Outreach Admins
Voice
Purchasing Phone Numbers

Before You Begin

Gather the following before you start:

Which Finnish number types you have: Mobile, Local, or both. Each type needs its own documentation bundle, so you may need up to two.
The documentation type you're registering under for each: Business or Individual
The information and supporting documents listed in the tables below
A Finnish address that matches the area code or locality of your number. PO Boxes aren't accepted for Local Business proof of address.

Note: You don't need to purchase a new number. Submitting a documentation bundle only registers the correct documentation type. Submit as early as possible so there is time for review.

Overview

Finnish number regulations require you to provide identity information, along with supporting documentation, for each type of number you use. Each of the tables below is a separate documentation bundle. The requirements depend on the number type and on whether you register as a business or as an individual.

Mobile – Business

Field	Information to enter or select	Required supporting documentation
Business name	Your business name	Proof of business registration If registered in Finland, provide the Trade Register extract (kaupparekisteriote) — obtainable here.
Business registration or tax ID	Finnish businesses provide Y-tunnus (e.g., 1234567-8). Foreign-registered businesses provide the equivalent registration number from country of origin.	Proof of business registration If registered in Finland, provide the Trade Register extract (kaupparekisteriote) — obtainable here.
Business Website	Public facing website or verified social media account	No documentation required
Business Purpose/Use Case	Choose Transactional, Promotional, or Verification	No documentation required
Authorized representative	Name and details of your authorized representative	No documentation required
Authorized Representative's Contact Email	Use of personal email domains may require additional vetting; alias emails are not permitted.	No documentation required
Business Address	Must be within Finland; a PO box is not acceptable.	Commercial registry or equivalent showing address Utility bill Tax notice Rent receipt Title deed

Mobile – Individual

Field	Information to enter or select	Required supporting documentation
Full name	Your full name	Government-issued ID Passport
ID type and ID number	The type and number of your identification document	Government-issued ID Passport
Address	Must be within Finland; a PO box is not acceptable.	Government-issued ID showing address Utility bill Tax notice Rent receipt Title deed
Purpose/Use Case	Choose Transactional, Promotional, or Verification	No documentation required

Local – Business

Field	Information to enter or select	Required supporting documentation
Business name	Your business name	Proof of business registration If registered in Finland, provide the Trade Register extract (kaupparekisteriote) — obtainable here.
Business registration or tax ID	Finnish businesses provide Y-tunnus (e.g., 1234567-8). Foreign-registered businesses provide the equivalent registration number from country of origin.	Proof of business registration If registered in Finland, provide the Trade Register extract (kaupparekisteriote) — obtainable here.
Business Website	Public facing website or verified social media account	No documentation required
Business Purpose/Use Case	Choose Transactional, Promotional, or Verification	No documentation required
Authorized representative	Name and details of your authorized representative	No documentation required
Authorized Representative's Contact Email	Use of personal email domains may require additional vetting; alias emails are not permitted.	No documentation required
Business Address	Must be within Finland; a PO box is not acceptable.	Commercial registry or equivalent showing address Utility bill Tax notice Rent receipt Title deed

Local – Individual

Field	Information to enter or select	Required supporting documentation
Full name	Your full name	Government-issued ID Passport
ID type and ID number	The type and number of your identification document	Government-issued ID Passport
Address	Must be within Finland; a PO box is not acceptable.	Government-issued ID showing address Utility bill Tax notice Rent receipt Title deed
Purpose/Use Case	Choose Transactional, Promotional, or Verification	No documentation required

Procedure

Log in to Outreach as an Admin.
Click Administration > Tools > Phone numbers.
To see which Finnish numbers you have, filter the list by Country, and note whether you have Mobile numbers, Local numbers, or both.
In the upper right of the list, select New phone.
In the Purchase phone number window, under Country, select Finland (+358).
Under Number type, select Mobile or Local.
Choose Business or Individual as your documentation type.
Complete the required fields as described in the tables above, and add the supporting documentation.
Submit the bundle. If you have a second number type, repeat steps 4 through 8.

Complete all submissions before November 10, 2026.

FAQ

What happens if I don't submit documentation by November 10, 2026?

Finnish phone numbers without an approved documentation bundle are at risk of having their traffic blocked and could be removed without notice.

Do I need to purchase a new number?

No. Creating a documentation bundle through New phone only submits the documentation. It doesn't purchase a number.

How many documentation bundles do I need?

One for each number type you have. If you have both Mobile and Local numbers, you need two bundles.

Can I use a PO Box as my address?

No. Proof of address can't be a PO Box.

Who is responsible for regulatory compliance?

The account holder. Under Outreach's terms of service, compliance for the use of phone numbers is the account holder's responsibility.

Who can I contact with questions?

Create a ticket in the support portal and include "Finland number regulations" in the subject line.

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