MTNL Mahanagar Telephone Nigam Ltd Investments/Divestments Announcement 2023 - Compliance Certificate Submission MTNL has submitted a Compliance Certificate under Regulation 74(5) of SEBI (Depositories and Participants) Regulations for the quarter ended September 30, 2023, confirming the dematerialization of securities and their listing on the stock exchanges..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Mahanagar Telephone Nigam Ltd