Is someone using a SIM card in your name? Follow these quick steps to find out

Updated on 23-Jun-2025

HIGHLIGHTS

DoT’s TAFCOP system lets users see all mobile numbers linked to their Aadhaar via sancharsaathi.gov.in.

Users can flag unknown or unused numbers to avoid misuse and get them deactivated.

One Aadhaar can link up to 9 SIMs (6 in J&K, Assam, NE); SMS alerts are sent if limits are exceeded.

In the past few years, the number of SIM card frauds has constantly been increasing, with scammers stealing your details. There are possibilities that someone could use your UID number while you’re totally unaware of it. The Department of Telecommunications (DoT) has launched a tool through the Sanchar Saathi portal under its TAFCOP system, enabling users to check how many SIMs are registered against their name.

Notably, the government of India has made it mandatory to link your Aadhaar card to your mobile number, and one Aadhaar can be registered with up to nine active SIMs across India, with a cap of six in Jammu & Kashmir, Assam and North Eastern states. Here’s how you can check how many SIM cards are registered to your mobile number.

How to check the number of SIM cards linked to your Aadhaar card

Go to the Sanchar Saathi portal at sancharsaathi.gov.in.
On the homepage, head to the ‘Citizen Centric Services’ section and tap on ‘Know Your Mobile Connections’.
Now, enter your 10-digit mobile number and the captcha code.
You will receive a one-time password (OTP) to your registered mobile number. Enter the OTP.
Once done, a list of all mobile numbers registered with your identity documents (like Aadhaar).

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What to do if you find any suspicious or unknown numbers linked to your account

If you spot an unfamiliar number, you can flag it as “Not My Number” to get it disconnected or “Not Required” for any older SIM that is not working anymore. Once you complete the process, the numbers will be deactivated based on your report. Those having more than 9 SIM cards registered in their name will receive a notification via SMS.

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Himani Jha

Himani Jha is a tech news writer at Digit. Passionate about smartphones and consumer technology, she has contributed to leading publications such as Times Network, Gadgets 360, and Hindustan Times Tech for the past five years. When not immersed in gadgets, she enjoys exploring the vibrant culinary scene, discovering new cafes and restaurants, and indulging in her love for fine literature and timeless music.