Process to check ISIN Number   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 … Continue reading HOW TO CHECK ISIN NUMBER (NSDL & CDSL)