Dear Sir It is requested to please find attached certificate under Reg. 74(5) of SEBI (DP) Regulations

CAMEO CORPORATE SERVICES LIMITED Ref: CAM/2026 03rd July, 2026 The Company Secretary Tamilnadu Telecommunications Ltd. E-18B 24 CMDA Industrial Complex Maraimalai Nagar 603209. Dear Sir, Subject: Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 for the quarter ended 30.06.2026. ------ With reference to the above captioned subject, we hereby confirm that the securities received from the depository participants for dematerialisation during the quarter ended 30th June, 2026 were confirmed (accepted/rejected) to the depositories by us and that securities comprised In the said certificates have been listed on the stock exchanges where the earlier Issued securities are listed. We hereby also confirm that the security certificates received for dematerialisation have been mutilated and cancelled after due verification by the depository participant and the name of the depositories have been substituted in register of members as the registered owner within stipulated time limit under captioned regulations. Thanking you Yours faithfully For CAMEO CORPORATE SERVICES LIMITED ASST.MANAGER (SHARES) CIN No:U67120TN1998PLC041613 'Subramanian Building', No.1, Club House Road, Chennai-600 002. Phone: (D) 044-40020710 / 044-2846 0390, Fax: 044-2846 0129 E-mail: cameo@cameoindia.com Website: www.cameoindia.com