# IMSI Validator

Validate IMSI numbers for mobile subscribers with MCC/MNC analysis

> Canonical page: https://elysiatools.com/en/tools/imsi-validator

- **Category:** Validation

- **Keywords:** imsi, validator, mobile, subscriber, identity, mcc, mnc, carrier

## Overview

The IMSI Validator is a precise utility designed to verify the structure of International Mobile Subscriber Identity (IMSI) numbers and extract key network information, including the Mobile Country Code (MCC) and Mobile Network Code (MNC).

## Inputs

- **IMSI Number** (text): Enter a 15-digit IMSI number (with or without separators)

## When to use

- Verify the integrity and format of a 15-digit IMSI number before database entry.
- Identify the country and mobile carrier associated with a specific subscriber identity.
- Troubleshoot connectivity or provisioning issues by confirming the MCC/MNC mapping.

## How it works

- Input the 15-digit IMSI number into the validator field, with or without hyphens.
- The tool parses the first three digits as the MCC and the subsequent two or three digits as the MNC.
- The system validates the total length and structure to ensure the number conforms to standard telecommunications protocols.

## Use cases

- Telecommunications billing and provisioning verification.
- Network diagnostic reporting for mobile engineers.
- Data cleaning for subscriber management systems.

## Frequently asked questions

### What is an IMSI number?

An IMSI is a unique 15-digit number used to identify a mobile subscriber on a cellular network.

### Does this tool store my IMSI data?

No, all validation occurs locally or in-session, and your data is not stored or logged.

### Can I use this tool for phone numbers?

No, this tool is specifically for IMSI numbers, not MSISDNs or public phone numbers.

### What happens if the IMSI is invalid?

The tool will flag the input as invalid if it fails the length check or contains non-numeric characters.

### Does it support international carriers?

Yes, it supports global IMSI formats by identifying the MCC/MNC codes assigned by the ITU.

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## Samples

- [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion
- [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion
- [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
- [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion