The International Securities Identification Number (ISIN) is a unique code used worldwide to identify securities such as shares, bonds, and debentures in electronic or dematerialized form.
In India, the authority to allot ISINs for demat shares is vested with the National Securities Depository Limited (NSDL). NSDL assigns ISINs to securities to facilitate their identification, settlement, and transfer electronically.
Explanation of Other Options:
(A) NSE: The stock exchange, does not allot ISINs.
(B) RBI: Regulates banks and financial institutions, not securities identification.
(D) SEBI: Regulates the securities market but does not allot ISINs.
Hence, option (C) is the correct answer.