Williams Communications Managed Services, Llc

Williams Communications, Inc

Williams Communications, Inc. (delaware)

Williams Energy Resources Llc

Williams Energy Ventures, Inc

Williams Flexible Generation, Llc

Williams Gas Marketing Company

Williams Gas Marketing, Inc

Williams Gas Marketing, Inc.

Williams Information Technology, Inc

Williams Learning Network, Inc

Williams Local Network, Inc

Williams Local Network, Inc

Williams Midstream Marketing And Risk Management, Inc

Williams Natural Gas Liquids, Inc

Williams Refining & Marketing, Llc

Williams Telecommunications Services, Inc

Williams Travelcenters, Inc

Williams Wireless, Inc

Williams Wpc - I, Inc