Visit the UIDAI official website
Go to the Aadhaar Services section
Select Verify Email/Mobile Number
Enter your Aadhaar number and mobile number
Enter the captcha code
Click on Send OTP
If the mobile number is linked, you will receive an OTP on that number
If no OTP is received, the mobile number is not linked to Aadhaar
You can also visit the nearest Aadhaar Enrolment or Update Center
Carry your Aadhaar card and valid ID proof
Ask the center to verify the mobile number linked with your Aadhaar
You can also call UIDAI helpline 1947 for assistance