ISIN The International Securities Identification Number (ISIN) is a 12-digit alphanumeric code that uniquely identifies a specific security. The ISIN code acts an identifier for the securities and as such is the only common denominator securities identification number that is universally recognized. Search ISIN Code. Type. All, Saham, Waran, HMETD, Obligasi, Medium Term Notes, Commercial Papers, Promissory Notes, Negotiable Certificate of Deposits.