Getting a call from an unknown number and wanting to know who it belongs to. Buying a secondhand phone and needing to verify what name the SIM is registered under. Suspecting that someone is using a SIM card registered to your Aadhaar without your knowledge. These are all legitimate, common situations — and in India, there are proper, legal ways to handle each one.
What there isn’t is a magic tool that pulls anyone’s personal registration details on demand. Indian telecom regulations under TRAI are strict about subscriber data privacy. This guide covers every method that’s genuinely available and legal.
Method 1: Check Your Own SIM Registration via Sanchar Saathi
The most authoritative way to see which SIM cards are registered under your name in India is through the government’s Sanchar Saathi portal, operated by the Department of Telecommunications.
Visit sancharsaathi.gov.in from any browser. Look for the TAFCOP (Telecom Analytics for Fraud Management and Consumer Protection) section. Enter your mobile number and complete the captcha. An OTP is sent to your number — enter it to proceed.
The portal then displays a complete list of all active SIM connections linked to your Aadhaar. Each entry shows the mobile number and the telecom circle it belongs to. If you spot a number you don’t recognise, tap Not My Number directly on the portal to flag it for investigation. The DoT then takes action to disconnect unauthorised connections.
This is the single most important check every Indian mobile subscriber should run periodically — particularly given the rise of SIM fraud cases where unknown individuals register SIMs using stolen Aadhaar details.
Method 2: Carrier Apps and Customer Care
Each major telecom operator in India allows subscribers to verify the name registered on their own SIM through their official apps.
MyJio app — Log in with your Jio number. The profile section shows the registered account holder name.
Airtel Thanks app — Log in and navigate to the profile or account section to see the name and Aadhaar-linked details for your number.
Vi app — Similar to the above; the registered subscriber name appears in the account details section.
MyBSNL app — Login with your BSNL number and check account details for registered name confirmation.
If you prefer not to use an app, call your operator’s customer care directly — 121 for Airtel, Jio, and Vi; 1800-180-1503 for BSNL — and request confirmation of the name registered on the SIM. You’ll be asked security questions to verify your identity before any information is shared.
Method 3: Truecaller for Caller Identification
Truecaller remains the most practical tool for identifying who is calling from an unknown number. It works by crowdsourcing user-submitted name data alongside carrier-registered information and maintains one of the largest phone number databases in India.
Open the Truecaller app or visit the website, enter the ten-digit mobile number in question, and search. If the number is in Truecaller’s database, the registered or commonly known name associated with it appears. The result isn’t always the official registered subscriber name — it could be a contact name someone else has saved — but it gives a reliable indication of who is behind the number.
Truecaller is free to use for basic searches and is legally acceptable since it uses publicly available and user-consented data rather than accessing carrier subscriber records.
Method 4: Send an SMS to 14422
The DoT’s 14422 helpline allows users to check and manage SIM-related concerns via SMS as well. Send your mobile number to 14422 and the service responds with information about connections registered under your Aadhaar. This is essentially an SMS-based version of the Sanchar Saathi portal check and is useful for users who prefer not to use a browser.
What You Cannot Do Legally
Checking the registered owner name of someone else’s SIM — a number belonging to another person — is not something any legal tool in India permits ordinary citizens to do. Carrier subscriber data is protected under telecom regulations, and accessing it without authorisation is an offence under Indian IT and telecom law.
If you’re receiving threatening or abusive calls, the correct route is filing a police complaint. Law enforcement has the authority to request subscriber details from telecom operators through proper legal channels. TRAI’s Sanchar Saathi portal also has a Report Suspected Fraud Communication feature where suspicious numbers can be reported directly.
5 FAQs
Q1. Can I check how many SIM cards are registered on my Aadhaar?
Yes. Visit sancharsaathi.gov.in, go to the TAFCOP section, enter your number, and verify with OTP. It shows all active SIM connections linked to your Aadhaar.
Q2. Is it legal to check someone else’s SIM owner name in India?
No. Accessing another person’s telecom subscriber data without consent is illegal under Indian telecom and IT laws. Only law enforcement can do this through official channels.
Q3. What should I do if I find an unknown SIM registered on my Aadhaar?
Report it immediately on the Sanchar Saathi portal using the “Not My Number” option. The DoT will investigate and disconnect the fraudulent connection.
Q4. Does Truecaller show the official registered name of a SIM?
Not always. Truecaller shows the name most commonly associated with the number in its database, which may differ from the official carrier-registered name.
Q5. How many SIM cards can one person legally hold in India?
As per TRAI regulations, one individual can have up to nine SIM cards registered across all operators using a single Aadhaar.