Hi.

If you have last 4 digit for your Aadhar Number then you cannot recover the complete Aadhar Number until and unless the numbers belongs to you.

If you wish to recover your Aadhar Card you can follow these methods:

In case your mobile number is registered in Aadhaar, you can find your Enrolment number (EID) or Aadhaar (UID) by clicking on “Retrieve Lost UID/EID” tab under Section Aadhaar enrolment on uidai.gov.in website or https://resident.uidai.gov.in/lost-uideid. Select EID/UID you want to retrieve and then enter your name and mobile number (as registered during Aadhaar enrolment). You will receive your EID/ Aadhaar number delivered on your email/ mobile number.

In case your mobile number is not registered in Aadhaar, you have to visit nearest Permanent Aadhaar Enrolment centre.

Good Luck