UCAS Online is a AA Megacorporation that is by far the largest Matrix Service Provider in the world, with over 20 million users worldwide. It has branches all over the world (with notable exceptions in Aztlan, Amazonia, Pueblo, Tir Tairngire, and Tir na nOg), with regional names such as Japan Online, Europe Online, etc. It is headquartered in Washington D.C..