---
title: Blocklist
description: What does it mean if a device is ‘Blocklisted’, and What Are the Implications if a Device is on the Blocklist?
---

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# Blocklist

## What does it mean if a device is ‘Blocklisted’, and What Are the Implications if a Device is on the Blocklist?

The GSMA Blocklist, managed by the GSM Association, is a global database of International Mobile Equipment Identity (IMEI) numbers associated with lost, stolen, or blocked mobile devices. It enables network operators worldwide to prevent the activation and use of devices reported for fraudulent activities, acting as a deterrent against theft and unauthorized use. Users can report lost or stolen devices to their network operators, who then add the device's IMEI to the GSMA Blocklist, preventing it from accessing networks globally. Checking a device's IMEI against the blocklist is critical when purchasing used devices to ensure they haven't been reported as lost or stolen. 

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