Verify the operator (online application)
(Switch to O2 - detailed information about the service.)
With this application you can immediately find out the operator of any Czech phone number you wish to call.
Just follow these steps:
- Enter the phone number
- Select the date; the application will tell you to which network this phone number belonged on that day (up to two months in the past)
- Copy the code you see in the grey field below into the text box
- Information will appear on this page informing you whether or not the number has been transferred to another network.
