IMEI number - TAC list - IMEI database - IMEI lookup

There is usualy a need to get a device type, brand, model, operating system, frequency bands, display size and other characteristics for mobile device from IMEI number for different purposes (user phone type analysis, user phone operating system analysis for different applications platform, device detection tool, marketing campaigns, device type restrictions for data traffic included in bundles) it is important to get information about users device used in network.

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Those are IMEI label examples of the different phone models. You can recognize IMEI by 15 digits (without other characters like slash “/” or minus “-” or spaces etc…)

Nokia 6020 label

Nokia 6020 IMEI label

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IMEI blacklist is a list of IMEI numbers which were reported to operator as stolen or lost. Operatorshas access to EIR (Equipment Identity Register) and if your phone is listed in this registry you can not use you mobile anymore in this operators network.

One of the lists can be found on stolen phones, lost phones database.

How could you know that the phone is blacklisted?

When you insert SIM and turn ON the phone you see message like
SIM card registration failed or
Invalid mobile

or if nothing from above messages, then you will not be able to make an outgoing phone call. You will hear some beeps and then call will be dropped.