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8x8 Support

How to Reserve an Extension Number


Reserve an extension number in 8x8 Admin Console.

Applies To

  • Admin Console
  • Extensions


  1. Log into 8x8 Admin Console.
  2. Click Extension Numbers.
    Screenshot 1.PNG
  3. Click Reserve Extension Numbers (top right).
    Screenshot 2.PNG
  4. Complete the fields, as seen below.
    Reserve Extensions Admin Console.png
  5. Click Save.

Best Practice

It is best practice that the below extension numbers marked as reserved are not used.

Reserve extensions.PNG

Additional information 

If you have a site set up with internal dialing codes, and the dialing code is XYZ, extensions such as XYZ555 for example are still reserved.

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