Subco is a Privately Owned company headquartered in Australia. Founded in 2016, with approximately 10 employees, the company reported $1.3M in revenue as of 2023. The company specializes in data centre infrastructure, functioning as a provider of undersea network systems that connect Australia to the Middle East and other regions.
On June 30, 2026, SUBCO brought its SMAP submarine cable system into service, linking Sydney, Melbourne, Adelaide, and Perth. The 5,000 km system represents Australia's largest transcontinental capacity increase in almost 25 years. Earlier, on June 27, SUBCO had declared the SMAP subsea cable system ready for service, detailing the 5,000-kilometre fully armoured cable's 16 fibre pairs, which deliver over 400 Tbps of capacity using space division multiplexing (SDM) technology. This system, connecting the country’s four largest cities, marks the first major transcontinental capacity upgrade to Australia’s backbone connectivity in nearly a quarter-century. The company initially announced the SMAP subsea cable's readiness for service on June 25.
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