Exhibit 21.1



Subsidiaries of Global Crossing



|    |  |                                                                 |  |              |  |               
|--- |  | --------------------------------------------------------------- |  | ------------ |  | --------------
|    |  | Company Name                                                    |  | Jurisdiction |  | Country       
|1.  |  | ALC Communications Corporation                                  |  | Delaware     |  | USA           
|2.  |  | Ameritel Management, Inc.                                       |  | Federal      |  | Canada        
|3.  |  | Atlantic Crossing Holdings Ltd.                                 |  |              |  | Bermuda       
|4.  |  | Atlantic Crossing Holdings U.K. Limited                         |  |              |  | UK            
|5.  |  | Atlantic Crossing Ltd.                                          |  |              |  | Bermuda       
|6.  |  | Atlantic Crossing II Ltd.                                       |  |              |  | Bermuda       
|7.  |  | Budget Call Long Distance, Inc.                                 |  | Delaware     |  | USA           
|8.  |  | Business Telemanagement, Inc.                                   |  | California   |  | USA           
|9.  |  | Equal Access Networks, LLC                                      |  | Delaware     |  | USA           
|10. |  | GC Dev. Co., Inc.                                               |  | Delaware     |  | USA           
|11. |  | GC Holdco SPV                                                   |  |              |  | Ireland       
|12. |  | GC Holding SPV                                                  |  |              |  | Ireland       
|13. |  | GC Hungary Holdings Vagyonkezelö Korlátolt Felelösségü Társaság |  |              |  | Hungary       
|14. |  | GC Landing Co. GmbH                                             |  |              |  | Germany       
|15. |  | GC Mart LLC                                                     |  | Michigan     |  | USA           
|16. |  | GC Pacific Landing Corp.                                        |  | Delaware     |  | USA           
|17. |  | GC Pan European Crossing Belgie B.V.B.A.                        |  |              |  | Belgium       
|18. |  | GC Pan European Crossing Czech s.r.o.                           |  |              |  | Czech Republic
|19. |  | GC Pan European Crossing Danmark A.P.S.                         |  |              |  | Denmark       
|20. |  | GC Pan European Crossing Deutschland GmbH                       |  |              |  | Germany       
|21. |  | GC Pan European Crossing Espana S.L.                            |  |              |  | Spain         
|22. |  | GC Pan European Crossing France S.A.R.L.                        |  |              |  | France        
|23. |  | GC Pan European Crossing Holdings B.V.                          |  |              |  | Netherlands   
|24. |  | GC Pan European Crossing Italia S.R.L.                          |  |              |  | Italy         
|25. |  | GC Pan European Crossing Luxembourg I S.À.R.L.                  |  |              |  | Luxembourg    
|26. |  | GC Pan European Crossing Luxembourg II S.À.R.L.                 |  |              |  | Luxembourg    
|27. |  | GC Pan European Crossing Nederland B.V.                         |  |              |  | Netherlands   
|28. |  | GC Pan European Crossing Networks B.V.                          |  |              |  | Netherlands   
|29. |  | GC Pan European Crossing Norge AS                               |  |              |  | Norway        
|30. |  | GC Pan European Crossing Osterreich GmbH                        |  |              |  | Austria       
|31. |  | GC Pan European Crossing Slovakia S.R.O.                        |  |              |  | Slovakia      
|32. |  | GC Pan European Crossing Sverige A.B.                           |  |              |  | Sweden        
|33. |  | GC Pan European Crossing Switzerland GmbH                       |  |              |  | Switzerland   
|34. |  | GC Pan European Crossing UK Limited                             |  |              |  | UK            
|35. |  | GC SAC Argentina S.R.L.                                         |  |              |  | Argentina     
|36. |  | G.C. St. Croix Company, Inc.                                    |  |              |  | USVI          
|37. |  | GC Trading GmbH                                                 |  |              |  | Austria       
|38. |  | GC UK Holding Ltd.                                              |  |              |  | UK            
|39. |  | GCNAN Claims, LLC                                               |  | Delaware     |  | USA           
|40. |  | GCNAN Claims, LLC                                               |  | California   |  | USA           
|41. |  | GCTI Claims, LLC                                                |  | California   |  | USA           
|42. |  | GCTI Claims, LLC                                                |  | Delaware     |  | USA           
|43. |  | Geoconference Limited                                           |  |              |  | UK            



---

|    |  |                                                              |  |              |  |            
|--- |  | ------------------------------------------------------------ |  | ------------ |  | -----------
|    |  | Company Name                                                 |  | Jurisdiction |  | Country    
|44. |  | Global Crossing Advanced Card Services, Inc.                 |  | Iowa         |  | USA        
|45. |  | Global Crossing Asia Holdings Ltd                            |  |              |  | Bermuda    
|46. |  | Global Crossing Bandwidth, Inc.                              |  | California   |  | USA        
|47. |  | Global Crossing Belgie B.V.B.A.                              |  |              |  | Belgium    
|48. |  | Global Crossing (Bidco) Limited                              |  |              |  | UK         
|49. |  | Global Crossing Billing, Inc.                                |  | Michigan     |  | USA        
|50. |  | Global Crossing Communications International Limited         |  |              |  | UK         
|51. |  | Global Crossing Conferencing-Canada, Ltd.                    |  | Federal      |  | Canada     
|52. |  | Global Crossing Conferencing Limited                         |  |              |  | UK         
|53. |  | Global Crossing Corporación S. de R.L. de C.V.               |  |              |  | Mexico     
|54. |  | Global Crossing Cyprus Holdings Limited                      |  |              |  | Cyprus     
|55. |  | Global Crossing Danmark A.P.S.                               |  |              |  | Denmark    
|56. |  | Global Crossing Deutschland GmbH                             |  |              |  | Germany    
|57. |  | Global Crossing Development Co.                              |  | Delaware     |  | USA        
|58. |  | Global Crossing Employee Services, Inc.                      |  | Delaware     |  | USA        
|59. |  | Global Crossing Espana S.L.                                  |  |              |  | Spain      
|60. |  | Global Crossing Europe Limited                               |  |              |  | UK         
|61. |  | Global Crossing France SAS                                   |  |              |  | France     
|62. |  | Global Crossing Globalcenter Holdings, Inc.                  |  | Delaware     |  | USA        
|63. |  | Global Crossing Government Markets USA, Inc.                 |  | Delaware     |  | USA        
|64. |  |                                                              |  |              |  | UK         
|65. |  | Global Crossing Holdings Limited (formerly GC Holdings Ltd.) |  |              |  | Bermuda    
|66. |  |                                                              |  |              |  |            
|67. |  | Global Crossing Holdings II Ltd.                             |  |              |  | Bermuda    
|68. |  | Global Crossing Holdings USA LLC                             |  | Delaware     |  | USA        
|69. |  | Global Crossing Intellectual Property Ltd.                   |  |              |  | Bermuda    
|70. |  | SOLD                                                         |  |              |  | UK         
|71. |  | Global Crossing International, Ltd.                          |  |              |  | Bermuda    
|72. |  | Global Crossing Internet Dial-Up, Inc.                       |  | Delaware     |  | USA        
|73. |  | Global Crossing Investments Ltd.                             |  |              |  | Bermuda    
|74. |  | Global Crossing Ireland Limited                              |  |              |  | Ireland    
|75. |  | Global Crossing Italia S.R.L.                                |  |              |  | Italy      
|76. |  | Global Crossing IXnet EMEA Holdings Limited                  |  |              |  | UK         
|77. |  | Global Crossing Landing Mexicana S. de R.L.                  |  |              |  | Mexico     
|78. |  | Global Crossing Latin America & Caribbean Co.                |  | Delaware     |  | USA        
|79. |  | Global Crossing Limited (formerly GC Acquisition Limited)    |  |              |  | Bermuda    
|80. |  | Global Crossing Local Services, Inc.                         |  | Michigan     |  | USA        
|81. |  | Global Crossing Management Services, Inc.                    |  | Delaware     |  | USA        
|82. |  | Global Crossing Mexicana S.de R.L. de C.V.                   |  |              |  | Mexico     
|83. |  | Global Crossing Nederland B.V.                               |  |              |  | Netherlands
|84. |  | Global Crossing Network Center Ltd.                          |  |              |  | Bermuda    
|85. |  | Global Crossing Network Center (UK) Ltd.                     |  |              |  | UK         



2



---

|     |  |                                                          |  |              |  |               
|---- |  | -------------------------------------------------------- |  | ------------ |  | --------------
|     |  | Company Name                                             |  | Jurisdiction |  | Country       
|86.  |  | Global Crossing Norge AS                                 |  |              |  | Norway        
|87.  |  | Global Crossing North America, Inc.                      |  | New York     |  | USA           
|88.  |  | Global Crossing North American Holdings, Inc.            |  | Delaware     |  | USA           
|89.  |  | Global Crossing North American Networks, Inc.            |  | Delaware     |  | USA           
|90.  |  | Global Crossing Panama Inc.                              |  |              |  | Panama        
|91.  |  | Global Crossing Portfolio Holdings Ltd.                  |  |              |  | Bermuda       
|92.  |  | Global Crossing Services Europe Limited                  |  |              |  | Ireland       
|93.  |  | Global Crossing Services Ireland Limited                 |  |              |  | Ireland       
|94.  |  | Global Crossing Servicios, S. de R.L. de C.V.            |  |              |  | Mexico        
|95.  |  | Global Crossing Sverige A.B.                             |  |              |  | Sweden        
|96.  |  | Global Crossing Switzerland GmbH                         |  |              |  | Switzerland   
|97.  |  | Global Crossing Telecommunications, Inc.                 |  | Michigan     |  | USA           
|98.  |  | Global Crossing Telecommunications-Canada, Ltd.          |  | Federal      |  | Canada        
|99.  |  | Global Crossing Telemanagement VA, LLC                   |  | Virginia     |  | USA           
|100. |  | Global Crossing Telemanagement, Inc.                     |  | Wisconsin    |  | USA           
|101. |  | Global Crossing (UK) Internet Services Limited           |  |              |  | UK            
|102. |  | Global Crossing (UK) Telecommunications Limited          |  |              |  | UK            
|103. |  | Global Crossing (UK) Telecommunications Networks Limited |  |              |  | UK            
|104. |  | Global Crossing USA Inc.                                 |  | Delaware     |  | USA           
|105. |  | Global Crossing Venezuela B.V.                           |  |              |  | Netherlands   
|106. |  | Global Crossing Ventures, Inc.                           |  | Delaware     |  | USA           
|107. |  | Global Crossing Worldwide Customer Help Desk Canada Ltd. |  | Federal      |  | Canada        
|108. |  | Global Marine Cable Systems Pte Limited                  |  |              |  | Singapore     
|109. |  | Global Marine Holdings Bermuda Ltd.                      |  |              |  | Bermuda       
|110. |  | Global Marine Systems (Americas) Inc.                    |  |              |  | USA           
|111. |  | Global Marine Systems (Bermuda) Limited                  |  |              |  | Bermuda       
|112. |  | Global Marine Systems (Depots) Ltd.                      |  | Federal      |  | Canada        
|113. |  | Global Marine Systems (Federal) Inc.                     |  | Delaware     |  | USA           
|114. |  | Global Marine Systems (Guernsey) Limited                 |  |              |  | Guernsey, C.I.
|115. |  | Global Marine Systems (Investments) Ltd.                 |  |              |  | UK            
|116. |  | Global Marine Systems (Japan) Ltd.                       |  |              |  | Japan         
|117. |  | Global Marine Systems Ltd.                               |  |              |  | UK            
|118. |  | Global Marine Systems Pension Trustee Limited            |  |              |  | UK            
|119. |  | GMS Guernsey Pension Plans Limited                       |  |              |  | Guernsey, C.I.
|120. |  | GT Landing Corp.                                         |  | Delaware     |  | USA           
|121. |  | GT Landing II Corp.                                      |  | Delaware     |  | USA           
|122. |  | GT Netherlands B.V.                                      |  |              |  | Netherlands   
|123. |  | GT U.K. Ltd.                                             |  |              |  | UK            
|124. |  | Harmstorf Submarine Systems Sdn Bhd                      |  |              |  | Malaysia      
|125. |  | International Exchange Networks GmbH                     |  |              |  | Germany       
|126. |  | International Exchange Networks SAS                      |  |              |  | France        
|127. |  | International Optical Network, L.L.C.                    |  | Delaware     |  | USA           



3



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|     |  |                                                   |  |              |  |         
|---- |  | ------------------------------------------------- |  | ------------ |  | --------
|     |  | Company Name                                      |  | Jurisdiction |  | Country 
|128. |  | International Optical Network Limited.            |  |              |  | UK      
|129. |  | Ixnet, Inc.                                       |  | Delaware     |  | USA     
|130. |  | Ixnet UK Limited                                  |  |              |  | UK      
|131. |  | MAC Landing Corp.                                 |  | Delaware     |  | USA     
|132. |  | Metaclorin Investco II, Inc.                      |  | Delaware     |  | USA     
|133. |  | Mid-Atlantic Crossing Holdings Ltd.               |  |              |  | Bermuda 
|134. |  | Mid-Atlantic Crossing Holdings UK Ltd.            |  |              |  | UK      
|135. |  | Mid-Atlantic Crossing Ltd.                        |  |              |  | Bermuda 
|136. |  | PAC Landing Corp.                                 |  | Delaware     |  | USA     
|137. |  | PAC Panama Ltd.                                   |  |              |  | Bermuda 
|138. |  | Pan American Crossing Holdings Ltd.               |  |              |  | Bermuda 
|139. |  | Pan American Crossing Ltd.                        |  |              |  | Bermuda 
|140. |  | Pan American Crossing U.K. Ltd.                   |  |              |  | UK      
|141. |  | Racal Telecommunications Inc.                     |  |              |  | USA     
|     |  | SAC Brazil (Backhaul) Ltd.                        |  |              |  | Bermuda 
|142. |  | SAC Brasil Holding Ltda.                          |  |              |  | Brazil  
|143. |  | SAC Brasil Ltda.                                  |  |              |  | Brazil  
|144. |  | SAC Chile S.A.                                    |  |              |  | Chile   
|145. |  | SAC Colombia Limitada                             |  |              |  | Colombia
|146. |  | SAC Panama Landing Ltd.                           |  |              |  | Bermuda 
|147. |  | SAC Panama S.A.                                   |  |              |  | Panama  
|148. |  | SAC Peru S.R.L.                                   |  |              |  | Peru    
|149. |  | Saturn Global Network Services (UK) Ltd.          |  |              |  | UK      
|150. |  | South American Crossing (Backhaul) Ltd.           |  |              |  | Bermuda 
|151. |  | South American Crossing (Subsea) Ltd.             |  |              |  | Bermuda 
|152. |  | South American Crossing Holdings (Backhaul) Ltd.  |  |              |  | Bermuda 
|153. |  | South American Crossing Holdings (Subsea) Ltd.    |  |              |  | Bermuda 
|154. |  | South American Crossing Holdings Ltd.             |  |              |  | Bermuda 
|155. |  | South American Crossing Ltd.                      |  |              |  | Bermuda 
|156. |  | SubServ Limited                                   |  |              |  | UK      
|157. |  | SubServ Pro Limited                               |  |              |  | UK      
|158. |  | Subsidiary Telco, LLC                             |  | Delaware     |  | USA     
|159. |  | US Crossing, Inc.                                 |  | Delaware     |  | USA     
|160. |  | Vibro Einspültechnik Düker    Und Wasserbau GmbH |  |              |  | Germany 
|161. |  | Vantagesubsea Inc                                 |  | Delaware     |  | USA     



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