Insane Internet Speeds: The Fastest Connections on Earth and What’s Coming Next
In April 2025, NICT and Sumitomo Electric transmitted 1.02 petabits per second over a 19-core fiber across 1,808 km. In June 2024, a Japan–UK team achieved 402 Tbps on a single standard fiber using six wavelength bands. AT&T offers dedicated internet up to 1 Tbps for enterprises. EPB in Chattanooga launched 25 Gbps service citywide in 2022.