Exhibit 21.1



Global Crossing Subsidiaries



|                                                                |  |          
|--------------------------------------------------------------- |  | ---------
|Asia:                                                           |  |          
|Global Crossing Australia Pty Limited                           |  | Australia
|Global Crossing Hong Kong Limited                               |  | Hong Kong
|Global Crossing Japan KK                                        |  | Japan    
|Global Crossing Singapore Pte. Ltd.                             |  | Singapore
|                                                                | 
|Bermuda:                                                        |  |          
|Atlantic Crossing Ltd.                                          |  | Bermuda  
|GC Crystal Holdings Ltd.                                        |  | Bermuda  
|Global Crossing Asia Holdings Ltd.                              |  | Bermuda  
|Global Crossing Australia Holdings Ltd.                         |  | Bermuda  
|Global Crossing Holdings Limited                                |  | Bermuda  
|Global Crossing International Networks Ltd.                     |  | Bermuda  
|Global Crossing International, Ltd.                             |  | Bermuda  
|Global Crossing Limited                                         |  | Bermuda  
|Global Crossing Network Center Ltd.                             |  | Bermuda  
|Old GMS Holdings Ltd.                                           |  | Bermuda  
|PAC Panama Ltd.                                                 |  | Bermuda  
|South American Crossing Holdings Ltd.                           |  | Bermuda  
|                                                                | 
|Europe:                                                         |  |          
|Fibernet GmbH                                                   |  | Germany  
|GC Hungary Holdings Vagyonkezelö Korlátolt Felelösségü Társaság |  | Hungary  
|GC Landing Co. GmbH                                             |  | Germany  



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|                                                                 |  |               
|---------------------------------------------------------------- |  | --------------
|GC Pan European Crossing France s.a.r.l.                         |  | France        
|Global Crossing PEC Holdings B.V.                                |  | Netherlands   
|GC Pan European Crossing Networks B.V.                           |  | Netherlands   
|Global Crossing PEC Österreich GmbH                              |  | Austria       
|Global Crossing België b.v.b.a.                                  |  | Belgium       
|Global Crossing Cyprus Holdings Limited                          |  | Cyprus        
|Global Crossing Ireland Limited                                  |  | Ireland       
|Global Crossing Nederland B.V.                                   |  | Netherlands   
|Global Crossing PEC Belgium b.v.b.a.                             |  | Belgium       
|Global Crossing PEC Czech s.r.o.                                 |  | Czech Republic
|Global Crossing PEC Danmark ApS                                  |  | Denmark       
|Global Crossing PEC Deutschland GmbH                             |  | Germany       
|Global Crossing PEC Espana S.A.                                  |  | Spain         
|Global Crossing PEC Italia s.r.l.                                |  | Italy         
|Global Crossing PEC Luxembourg I S.a.r.l.                        |  | Luxembourg    
|Global Crossing PEC Luxembourg II S.a.r.l.                       |  | Luxembourg    
|Global Crossing PEC Nederland B.V.                               |  | Netherlands   
|Global Crossing PEC Norge AS                                     |  | Norway        
|Global Crossing PEC Switzerland AG                               |  | Switzerland   
|Global Crossing Services Europe Limited                          |  | Ireland       
|Global Crossing Services Ireland Limited                         |  | Ireland       
|Global Crossing Sverige A.B .                                    |  | Sweden        
|GT Netherlands B.V.                                              |  | Netherlands   
|International Satellite Communication Holding Aktiengesellschaft |  | Liechtenstein 



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|                                                |  |                 
|----------------------------------------------- |  | ----------------
|North America:                                  |  |                 
|ALC Communications Corporation                  |  | Delaware        
|Ameritel Management, Inc.                       |  | British Columbia
|Budget Call Long Distance, Inc.                 |  | Delaware        
|Global Crossing Advanced Card Services, Inc.    |  | Iowa            
|Global Crossing Bandwidth, Inc.                 |  | California      
|Global Crossing Billing, Inc.                   |  | Michigan        
|Global Crossing Development Co.                 |  | Delaware        
|Global Crossing Employee Services Inc.          |  | Delaware        
|Global Crossing Local Services, Inc.            |  | Michigan        
|Global Crossing North America, Inc.             |  | New York        
|Global Crossing North American Holdings, Inc.   |  | Delaware        
|Global Crossing North American Networks, Inc.   |  | Delaware        
|Global Crossing Telecommunications-Canada, Ltd. |  | Canada          
|Global Crossing Telecommunications, Inc.        |  | Michigan        
|Global Crossing Telemanagement VA, LLC          |  | Virginia        
|Global Crossing Telemanagement, Inc.            |  | Wisconsin       
|GT Landing II Corp.                             |  | Delaware        
|Impsat Fiber Networks, Inc.                     |  | Delaware        
|Global Crossing Americas Solutions, Inc.        |  | Delaware        
|International Optical Network, L.L.C.           |  | Delaware        
|Racal Telecommunications, Inc.                  |  | Delaware        
|US Crossing, Inc.                               |  | Delaware        



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|                                                  |  |                    
|------------------------------------------------- |  | -------------------
|South America, Mexico & Caribbean:                |  |                    
|Corlew Investment S.A.                            |  | Uruguay            
|Deason Investment S.A.                            |  | Uruguay            
|GC SAC Argentina S.R.L.                           |  | Argentina          
|G.C. St. Croix Company, Inc.                      |  | U.S. Virgin Islands
|Global Crossing Argentina S.A.                    |  | Argentina          
|Global Crossing Chile S.A.                        |  | Chile              
|Global Crossing Colombiana Ltda.                  |  | Colombia           
|Global Crossing Colombia S.A.                     |  | Colombia           
|Global Crossing Comunicacoes do Brasil Ltda.      |  | Brazil             
|Global Crossing Comunicaciones Ecuador S.A.       |  | Ecuador            
|Global Crossing Costa Rica S.R.L.                 |  | Costa Rica         
|Global Crossing Landing Mexicana S. de R.L.       |  | Mexico             
|Global Crossing Mexicana, S. de R.L. de C.V.      |  | Mexico             
|Global Crossing Mexicana II, S. De R.L. de C.V.   |  | Mexico             
|Global Crossing Panama, Inc.                      |  | Panama             
|Global Crossing Servicios, S. de R. L. de C. V.   |  | Mexico             
|Global Crossing Venezuela S.A.                    |  | Venezuela          
|Impsat Participacoes E Comercial Ltda.            |  | Brazil             
|Impsat Peru S.A.                                  |  | Peru               
|SAC Brasil Holding Ltda.                          |  | Brazil             
|SAC Brasil S.A.                                   |  | Brazil             
|SAC Colombia Limitada (In process of liquidation) |  | Colombia           
|SAC Panama, S.A.                                  |  | Panama             
|SAC Peru S.R.L.                                   |  | Peru               
|Telecom Infrastructure Hardware S.R.L.            |  | Peru               



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|                                                |  |        
|----------------------------------------------- |  | -------
|United Kingdom:                                 |  |        
|Atlantic Crossing Holdings U.K. Limited         |  | England
|Fibernet Group Limited                          |  | England
|Fibernet Holdings Limited                       |  | England
|Fibernet Limited                                |  | England
|Fibernet Quest Limited                          |  | England
|Fibernet UK Limited                             |  | England
|GC Acquisitions UK Limited                      |  | England
|GC Impsat Holdings I Plc                        |  | England
|GC Impsat Holdings II Limited                   |  | England
|GC Impsat Holdings III Limited                  |  | England
|GC IMPSAT Holdings Nederland B.V.               |  | England
|GC Pan European Crossing UK Limited             |  | England
|Geoconference Limited                           |  | England
|Global Crossing (Bidco) Limited                 |  | England
|Global Crossing Conferencing Limited            |  | England
|Global Crossing Europe Limited                  |  | England
|Global Crossing Financial Markets Limited       |  | England
|Global Crossing Network Center (UK) Ltd.        |  | England
|Global Crossing (UK) Finance Plc                |  | England
|Global Crossing (UK) Telecommunications Limited |  | England
|GT U.K. Ltd.                                    |  | England
|International Optical Network Limited           |  | England
|Mid-Atlantic Crossing Holdings UK Ltd           |  | England
|Pan American Crossing UK Ltd                    |  | England



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