How many phone numbers can you get?

When you are looking for and getting phone numbers for your organization, you can get more phone numbers than you have assigned licenses. But this depends on the types of phone numbers and types of licenses you have bought and assigned. You can click Different kinds of phone numbers used for Calling Plans to find out about the different phone numbers that are used in Skype for Business Online.

You can see the number of phone numbers you can get on the Phone numbers page in the Skype for Business admin center, or you can run the Get-CsOnlineTelephoneNumberAvailableCount cmdlet.

Important

The limits below don't include phone numbers you have ported or transferred to Microsoft.

How many phone numbers you can get?

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 Domestic and International Calling Plan licenses multiplied by 1.1 + 10 additional phone numbers.
If I have 50 users in total with either a Domestic Calling Plan and/or Domestic and International Calling Plan, you can acquire 65 phone number (50 x 1.1 + 10).
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.
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, please contact support for business products - Admin Help

Transferring phone numbers common questions

Different kinds of phone numbers used for Calling Plans

Manage phone numbers for your organization Emergency calling terms and conditions

Skype for Business Online: Emergency Calling disclaimer label