"At the heart of Oakland ARTCC is a team of Air Traffic and Technical Operations Professionals. Oakland Center is unique in that two distinctly different air traffic control functions are handled here. There is the normal en route air traffic control as well as an oceanic air traffic operation that manages the largest volume of international airspace in the world at one facility. (...) Phone: (510) 745-3000" http://www.faa.gov/about/office_org/headquarters_offices/ato/artcc/oakland/
