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Exhibit 21.1

List of Subsidiaries as of December 31, 2012

Name of Subsidiary
  Jurisdiction

Boingo Holding Participações, Ltda. 

  Brazil

Chicago Concourse Development Group, LLC

  Delaware

Concourse Communications Baltimore, LLC

  Delaware

Concourse Communications Canada, Inc. 

  Delaware

Concourse Communications Detroit, LLC

  Delaware

Concourse Communications Group, LLC

  Delaware

Concourse Communications Illinois, LLC

  Illinois

Concourse Communications Minnesota, LLC

  Delaware

Concourse Communications Nashville, LLC

  Illinois

Concourse Communications Ottawa, LLC

  Illinois

Concourse Communications Puerto Rico, LLC

  Puerto Rico

Concourse Communications SSP, LLC

  Delaware

Concourse Communications St. Louis, LLC

  Delaware

Concourse Communications UK, Ltd. 

  England

Concourse Holding Co., LLC

  Delaware

InGate Holding, LLC

  Illinois

InGate Technologies, LLC

  Delaware

New York Telecom Partners, LLC

  Delaware

Opti-Fi Networks, LLC

  Delaware

tego Communications, Inc. 

  Delaware



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List of Subsidiaries as of December 31, 2012