Your BlackBerry's PRD is located on the sticker under the phone's battery.
The PRD is an additional identifier which allows for obtaining the unlocking code for your BlackBerry with greater speed and reliability.
Take note of the 8 numbers ONLY, ignoring the letters PRD and hyphens. We only need the 8 numbers to obtain your unlocking code.
If you haven't requested IMEI unlocking yet to use your BlackBerry with any carrier in any country, you can do so here: