Exhibit 21 | ||||||||
ENTITY | JURISDICTION | |||||||
Alliance Canada Marketing L.P. | Alberta | |||||||
Alliance Canada Marketing LTD | Alberta | |||||||
Appalachia Midstream Services, L.L.C. | Oklahoma | |||||||
Aux Sable Liquid Products Inc. | Delaware | |||||||
Aux Sable Liquid Products LP | Delaware | |||||||
Aux Sable Midstream LLC | Delaware | |||||||
Bargath LLC | Delaware | |||||||
Baton Rouge Fractionators LLC | Delaware | |||||||
Baton Rouge Pipeline LLC | Delaware | |||||||
Black Marlin Pipeline LLC | Texas | |||||||
Bluebonnet Market Express LLC | Delaware | |||||||
Blue Racer Midstream, LLC | Delaware | |||||||
Bluestem Gas Services, L.L.C. | Oklahoma | |||||||
Bluestem Pipeline LLC | Delaware | |||||||
Brazos Permian II, LLC | Delaware | |||||||
Caiman Energy II, LLC | Delaware | |||||||
Caiman Ohio Midstream, LLC | Texas | |||||||
Carbon County UCG, Inc. | Delaware | |||||||
Carbonate Trend Pipeline LLC | Delaware | |||||||
Cardinal Gas Services, L.L.C. | Delaware | |||||||
Cardinal Operating Company, LLC | Delaware | |||||||
Cardinal Pipeline Company, LLC | North Carolina | |||||||
Constitution Pipeline Company LLC | Delaware | |||||||
Discovery Gas Transmission LLC | Delaware | |||||||
Discovery Producer Services LLC | Delaware | |||||||
DMP New York, Inc. | New York | |||||||
Gulfstar One LLC | Delaware | |||||||
Gulfstream Management & Operating Services, L.L.C. | Delaware | |||||||
Gulfstream Natural Gas System, L.L.C. | Delaware | |||||||
HB Construction Company Ltd. | Alberta | |||||||
Inland Ports, Inc. | Tennessee | |||||||
Kiowa Lateral LLC | Delaware | |||||||
Laurel Mountain Midstream Operating LLC | Delaware | |||||||
Laurel Mountain Midstream, LLC | Delaware | |||||||
Louisiana Midstream Gas Services, L.L.C. | Oklahoma | |||||||
Magnolia Midstream Gas Services, L.L.C. | Oklahoma | |||||||
Marsh Resources, LLC | Delaware | |||||||
Mid-Continent Fractionation and Storage, LLC | Delaware | |||||||
Mockingbird Midstream Gas Services, L.L.C. | Oklahoma | |||||||
Monarch Pipeline LLC | Delaware | |||||||
Nopal Gathering LLC | Delaware | |||||||
Northwest Pipeline LLC | Delaware |
Exhibit 21 | ||||||||
ENTITY | JURISDICTION | |||||||
Ohio Valley Midstream LLC | Delaware | |||||||
Oklahoma Midstream Gas Services, L.L.C. | Oklahoma | |||||||
Overland Pass Pipeline Company LLC | Delaware | |||||||
Pacific Connector Gas Pipeline, LP | Delaware | |||||||
Parachute Pipeline LLC | Delaware | |||||||
Pecan Hill Water Solutions | Delaware | |||||||
Pennant Midstream LLC | Delaware | |||||||
Permian Connector, LLC | Delaware | |||||||
Pine Needle LNG Company, LLC | North Carolina | |||||||
Pine Needle Operating Company, LLC | Delaware | |||||||
Ponder Midstream Gas Services, L.L.C. | Delaware | |||||||
Reserveco Inc. | Delaware | |||||||
Rocky Mountain Midstream Holdings LLC | Delaware | |||||||
Rocky Mountain Midstream JV Holdings LLC | Delaware | |||||||
Rocky Mountain Midstream LLC | Texas | |||||||
Rocky Mountain Midstream Marketing LLC | Texas | |||||||
Rocky Mountain Midstream Pipeline LLC | Texas | |||||||
Rocky Mountain Midstream Water LLC | Texas | |||||||
South Mansfield E&P, LLC | Delaware | |||||||
Targa Train 7 LLC | Delaware | |||||||
Texas Midstream Gas Services, L.L.C. | Oklahoma | |||||||
The Williams Companies Foundation, Inc. | Oklahoma | |||||||
The Williams Companies, International Holdings B.V. | Dutch BV | |||||||
Three Rivers Midstream LLC | Delaware | |||||||
TransCardinal Company, LLC | Delaware | |||||||
TransCarolina LNG Company, LLC | Delaware | |||||||
Transco Exploration Company | Delaware | |||||||
Transcontinental Gas Pipe Line Company, LLC | Delaware | |||||||
TWC Holdings C.V. | Netherlands | |||||||
UEOM NGL Pipelines LLC | Delaware | |||||||
Utica East Ohio Midstream, L.L.C. | Delaware | |||||||
Utica Gas Services, L.L.C. | Oklahoma | |||||||
Wamsutter LLC | Delaware | |||||||
Wamsutter E&P, LLC | Delaware | |||||||
WFS - Liquids LLC | Delaware | |||||||
WFS Gathering Company, L.L.C. | Delaware | |||||||
Williams ACM Holdings ULC | British Columbia | |||||||
Williams Acquisition Holding Company LLC | New Jersey | |||||||
Williams Alaska Petroleum, Inc. | Alaska | |||||||
Williams Bayou Ethane Pipeline, LLC | Delaware | |||||||
Williams Blu Operating LLC | Delaware | |||||||
Williams Compression, L.L.C. | Oklahoma |
Exhibit 21 | ||||||||
ENTITY | JURISDICTION | |||||||
Williams CV Holdings LLC | Delaware | |||||||
Williams Energy Resources LLC | Delaware | |||||||
Williams Energy Solutions LLC | Delaware | |||||||
Williams Express LLC | Delaware | |||||||
Williams Express, Inc. | Alaska | |||||||
Williams Field Services - Gulf Coast Company LLC | Delaware | |||||||
Williams Field Services Company, LLC | Delaware | |||||||
Williams Field Services Group, LLC | Delaware | |||||||
Williams Flexible Generation, LLC | Delaware | |||||||
Williams Gas Processing - Gulf Coast Company LLC | Delaware | |||||||
Williams Global Energy (Cayman) Limited | Cayman Islands | |||||||
Williams Global Holdings LLC | Delaware | |||||||
Williams Gulf Coast Transportation Company LLC | Delaware | |||||||
Williams Headquarters Building LLC | Delaware | |||||||
Williams Holdings and Manufacturing LLC | Delaware | |||||||
Williams Hutch Rail Company, LLC | Delaware | |||||||
Williams Information Technology LLC | Delaware | |||||||
Williams International Company LLC | Delaware | |||||||
Williams International El Furrial Limited | Cayman Islands | |||||||
Williams International Pigap Limited | Cayman Islands | |||||||
Williams International Venezuela Limited | Cayman Islands | |||||||
Williams Laurel Mountain, LLC | Delaware | |||||||
Williams Midstream Gas Services, L.L.C. | Oklahoma | |||||||
Williams MLP Operating, L.L.C. | Delaware | |||||||
Williams Mobile Bay Producer Services, L.L.C. | Delaware | |||||||
Williams Ohio River Valley LLC | Delaware | |||||||
Williams Ohio River Valley Corporation | Delaware | |||||||
Williams Ohio Valley Midstream LLC | Texas | |||||||
Williams Ohio Valley Pipeline LLC | Delaware | |||||||
Williams Oil Gathering, L.L.C. | Delaware | |||||||
Williams Olefins Feedstock Pipelines, L.L.C. | Delaware | |||||||
Williams Olefins Pipeline Holdco LLC | Delaware | |||||||
Williams Pacific Connector Gas Operator, LLC | Delaware | |||||||
Williams Partners Operating LLC | Delaware | |||||||
Williams PERK, LLC | Delaware | |||||||
Williams Petroleum Services, LLC | Delaware | |||||||
Williams Pipeline Services LLC | Delaware | |||||||
Williams Propylene Company LLC | Delaware | |||||||
Williams Resource Center, L.L.C. | Delaware | |||||||
Williams Rocky Mountain Midstream Holdings LLC | Delaware | |||||||
Williams Rocky Mountain Midstream Operating LLC | Delaware | |||||||
Williams Solar Holdco LLC | Delaware |
Exhibit 21 | ||||||||
ENTITY | JURISDICTION | |||||||
Williams Strategic Sourcing Company | Delaware | |||||||
Williams Upstream Holdings, LLC | Delaware | |||||||
Williams WPC - I, LLC | Delaware | |||||||
WilPro Energy Services (El Furrial) Limited | Cayman Islands | |||||||
WilPro Energy Services (Pigap II) Limited | Cayman Islands |