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EXHIBIT 21

ECHOSTAR CORPORATION AND SUBSIDIARIES
LIST OF SUBSIDIARIES
As of December 31, 2013

Legal Entity |  | State or Country of Incorporation |  | % Ownership |
--- | --- | --- | --- | --- | ---
EchoStar Technologies L.L.C. |  | Texas |  |  | 100% |
Hughes Satellite Systems Corporation |  | Colorado |  |  | 100% |
Hughes Communications, Inc. |  | Delaware |  |  | 100% | (1)
EchoStar Satellite Services L.L.C |  | Colorado |  |  | 100% | (1)
EchoStar Technologies International Corporation |  | Colorado |  |  | 100% |
EchoStar Operating Corporation |  | Colorado |  |  | 100% |
Troppus Software Corporation |  | Delaware |  |  | 100% |
Sling Media, Inc. |  | Delaware |  |  | 100% |
EchoStar 77 Corporation |  | Delaware |  |  | 100% | (1)
EchoStar Satellite Operating Corporation |  | Colorado |  |  | 100% | (1)

(1)
  Subsidiary of Hughes Satellite Services Corporation

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EXHIBIT 21

ECHOSTAR CORPORATION AND SUBSIDIARIES LIST OF SUBSIDIARIES As of December 31, 2013