How many telephone numbers can you get?

When you're looking for and getting Microsoft-supplied telephone numbers for your organization, you can get more telephone numbers than you have assigned licenses. But this depends on the types of telephone numbers and types of licenses you've bought and assigned.

How you acquire and manage telephone numbers differs depending on your PSTN connectivity option: Microsoft Calling Plans, Operator Connect, Operator Connect Mobile (Public preview release), or Direct Routing. For more information, see Manage telephone numbers for your organization.

The following table applies to Microsoft Calling Plans, Audio Conferencing, and voice apps, such as Call Queues and Auto Attendants. For information about Operator Connect, Operator Connect Mobile, or Direct Routing, contact your service provider.

You can see the quantity of telephone numbers you can get from Microsoft during the search and acquire process in the Microsoft Teams admin center (Get phone numbers).

Important

The limits below don't include telephone numbers you have ported to Microsoft.

Here's the type of phone number How do you get the total phone numbers? Here's an example
User (subscriber) number The number of phone numbers is equal to the total number of Domestic Calling Plan and/or International Calling Plan licenses multiplied by 1.1 + 10 extra phone numbers. If you have Pay-As-You-Go licenses, you can only acquire 1 phone number per license. If I have 50 users in total with 30 of them on a Domestic Calling Plan or International Calling Plan, and 20 of them on a Pay-As-You-Go Calling Plan, you can acquire 63 phone numbers (30 x 1.1 + 10) + 20.
Toll service number The number of phone numbers is equal to the total number of Phone System and Audio Conferencing licenses and uses the following:
If there are 1-25 licenses then 5 telephone numbers are given.
If there are 26-49 licenses then 10 telephone numbers are given.
If there are 50-99 licenses then 20 telephone numbers are given.
If there are 100-149 licenses then 30 telephone numbers are given.
If there are 150-199 licenses then 40 telephone numbers are given.
If there are 200-499 licenses then 65 telephone numbers are given.
If there are 500-749 licenses then 90 telephone numbers are given.
If there are 750-999 licenses then 110 telephone numbers are given.
If there are 1,000-1,249 licenses then 125 telephone numbers are given.
If there are 1,250-1,499 licenses then 135 telephone numbers are given.
If there are 1,500-1,999 licenses then 160 telephone numbers are given.
If there are 2,000-2,999 licenses then 210 telephone numbers are given.
If there are 3,000-6,999 licenses then 420 telephone numbers are given.
If there are 7,000-9,999 licenses then 500 telephone numbers are given.
If there are 10,000-14,999 licenses then 600 telephone numbers are given.
If there are 15,000-19,999 licenses then 700 telephone numbers are given.
If there are 20,000-49,999 licenses then 1000 telephone numbers are given.
If there are 50,000+ licenses then 1500 telephone numbers are given.

For Audio Conferencing with dial-out to USA/CAN subscription licenses (free in select geographies), 1 toll service number is given in addition to the numbers that are automatically granted when onboarding to the service, regardless of the number of licenses acquired.
If you have a total of 51 Phone System and Audio Conferencing licenses, you can get 20 toll service numbers. If you have a total of 51 Phone System and Audio Conferencing licenses, you can get 20 toll service numbers.
Toll-free service number The number of phone numbers is equal to the total number of Phone System and Audio Conferencing licenses and uses the following:
If there are 1-25 licenses then 5 telephone numbers are given.
If there are 26-49 licenses then 10 telephone numbers are given.
If there are 50-99 licenses then 20 telephone numbers are given.
If there are 100-149 licenses then 30 telephone numbers are given.
If there are 150-199 licenses then 40 telephone numbers are given.
If there are 200-499 licenses then 65 telephone numbers are given.
If there are 500-749 licenses then 90 telephone numbers are given.
If there are 750-999 licenses then 110 telephone numbers are given.
If there are 1,000-1,249 licenses then 125 telephone numbers are given.
If there are 1,250-1,499 licenses then 135 telephone numbers are given.
If there are 1,500-1,999 licenses then 160 telephone numbers are given.
If there are 2,000-2,999 licenses then 210 telephone numbers are given.
If there are 3,000-6,999 licenses then 420 telephone numbers are given.
If there are 7,000-9,999 licenses then 500 telephone numbers are given.
If there are 10,000-14,999 licenses then 600 telephone numbers are given.
If there are 15,000-19,999 licenses then 700 telephone numbers are given.
If there are 20,000-49,999 licenses then 1000 telephone numbers are given.
If there are 50,000+ licenses then 1500 telephone numbers are given.
If you have a total of 1001 Phone System and Audio Conferencing licenses, you can get 125 toll-free service numbers.

Important: Communications Credits billing is required to reserve and use toll-free phone numbers.

Note

If you need to get more telephone numbers than this, contact the Phone Number Service Center.

Manage telephone numbers for your organization

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