- Business
- PT Ketrosden Triasmitra Tbk (KETR.JK) operates as an integrated telecommunications infrastructure company in Indonesia, specializing in the development, deployment, ownership, maintenance, monitoring, and commercialization of submarine and terrestrial fiber optic backbone networks. The company provides a comprehensive suite of services, including contractor services for designing, engineering, surveying, permitting, material procurement, cable installation, testing, and commissioning of inland and submarine cable systems; developer services for owning and operating major projects such as the Batam-Dumai (331 km), Jakarta-Singapore B2JS (1,070 km), Surabaya-Denpasar (520 km), Ultimate Java Backbone (2,661 km), Jayabaya Jakarta-Surabaya (875 km), Medan-Dumai Damai (572 km), Rising-8 Indonesia-Singapore (1,077 km), and SKKL Indonesia Tengah (2,597 km) submarine cables; managed services encompassing 24/7 network operation center monitoring, preventive and corrective maintenance for both submarine and inland cables via systems like MOCIS, DMS, and QMS, with 22 service points in Java and Bali plus 15 in Sumatra; and collocation and data center facilities. It also sells submarine and terrestrial fiber optic cable systems and offers construction services for electrical and telecommunication lines, primarily serving telecommunications operators, government entities, and enterprises requiring high-capacity connectivity.
Founded in 1994 and headquartered at Gedung Meta Epsi, 2nd Floor, Jl. Mayjend D.I. Panjaitan Kav. 2, East Jakarta, DKI Jakarta 13350, Indonesia, the company listed on the Indonesia Stock Exchange in November 2022, marking its transition to a public entity with a full-service, end-to-end fiber optic model. PT Ketrosden Triasmitra Tbk serves as the holding company of the Triasmitra Group, with affiliated subsidiaries delivering specialized developer, contractor, managed, and collocation services, and operates as a subsidiary of PT Fajar Sejahtera Mandiri Nusantara. Its operations focus on Indonesia's archipelago, enhancing national digital connectivity through over 6,000 km of deployed fiber optic infrastructure, with international extensions to Singapore.
Recent developments include the procurement and conversion of the Indonesian-flagged cable-laying vessel "Bentang Bahari" to bolster in-house submarine deployment and maintenance capabilities, announced in September 2025. In September 2025, Triasmitra Group signed an Indefeasible Right of Use (IRU) agreement with PT Remala Abadi Tbk for utilization of five backbone cable infrastructures, expanding commercialization opportunities. Additionally, through subsidiary PT Jejaring Mitra Persada, the company has engaged in IRU partnerships for projects like the Jakarta-Batam-Singapore submarine cable, supporting strategic growth in fiber-to-the-home and operational synergies.