Possession of Director Identification Number (DIN) is a mandatory requirement for being a director on the Board of a Company. There is no provision of law which requires cancellation of DIN in the event of 'Blacklisting' of companies. 'Blacklisting of Companies', if any, in the matter of tender process etc. of companies is carried out by the agencies/ organizations calling tenders; it has nothing to do with the Companies Act and therefore information about 'Blacklisting' is not available with the Registrars of Companies.