Manage phone numbers for your organization

There are four ways to get user (subscriber) and service (toll and toll-free) phone numbers for your organization:


In Belgium, France, Germany, Ireland, the Netherlands, and Spain, you can't get phone new phone numbers using the Microsoft Teams Admin Center. You have to download and fill out a form. For new phone numbers in Australia, see: Telstra Voice Services.

If you know what kind of forms you are looking for, use the drop-down to select the country/region where you're getting numbers.

Select your country or region to find the downloadable PDF LOA forms you will need

Here's a bit more information about these number request forms

Request forms for new phone numbers

Each country or region has different instructions, different types of phone numbers (geographic/non-geographic and service (toll/toll-free)) and rules/regulations for getting phone numbers so they can be used in Microsoft Teams.

Sometimes (depending on your country or region) you won't be able to get new user (subscriber) or service (toll or toll-free) phone numbers using the Microsoft Teams admin center or you might need specific phone numbers (vanity requests) or specific area codes.

If so, you will need to download the correct PDF LOA form (per country or region and type of phone numbers) and send it back to us. Our service desk will take it from there and start processing your request.

Letters of Authorization (LOAs) to transfer/port existing phone numbers from another service provider to Microsoft Teams

If you need to transfer/port your existing phone numbers, you will need to download, fill and send us a Letter of Authorization (LOA), which gives us permission to request and transfer, on your behalf, those existing numbers from a different service provider into Microsoft Teams.

Please send us an LOA if you currently have the following with another carrier:

  • User (subscriber) numbers.
  • Service (toll) numbers for audio conferencing bridges, auto attendants, or call queues.
  • Toll-Free phone numbers.
  • More than 999 user phone numbers that you need to transfer/port but can't get in the Microsoft Teams admin center using the local number porting wizard.

Once you have your filled and signed LOA, please contact our PSTN Service Desk so we can assist you.

Still need assistance?

Please contact our PSTN Service Desk and we will assist you as soon as possible.

Additional resources

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