An International Securities Identification Number (ISIN) is a 12-digit alphanumeric code that uniquely identifies a specific security. ISIN shows up in your De-Mat account holding statement where your securities are held.

To check the validity of an ISIN you can go ahead and visit the following links:

NSDL– To check the ISIN number of the Companies registered in NSDL (Click here)

CDSL– To check the ISIN number of the Companies registered in CDSL (Click here)