What is the fewest number of characters I can have in my OnPageID?

Owned by Adam Diamond (Unlicensed)
Jun 08, 2016

OnPage ID’s must be at least 5 characters long.

NOTE:

If you are going to receive pages via phone using the OnPage toll free number, choose an OnPage ID composed of just numbers and as short as possible, e.g. OnPage ID= 78191. If you decide to use a Alpha characters keep it short, remember those who page you will need to enter your OnPage ID using the alpha characters on the dial pad.