EXHIBIT 21.1

Subsidiaries of the Registrant

|Name of Subsidiary                                                                                                           |  | State of
Incorporation |  | Doing
Business As
|---------------------------------------------------------------------------------------------------------------------------- |  | ---------------------- |  | -----------------
|Bay Area Teleport, Inc.                                                                                                      |  | Delaware               |  |                 
|Communications Buying Group, Inc.                                                                                            |  | Ohio                   |  |                 
|ICG DataChoice Network Services, L.L.C.                                                                                      |  | Nevada                 |  |                 
|DownNorth, Inc. (formerly known as UpSouth Corporation)                                                                      |  | Georgia                |  |                 
|ICG Access ServicesSoutheast, Inc. (formerly known as PrivaCom, Inc.)                                                       |  | Delaware               |  |                 
|ICG Canadian Acquisition, Inc.                                                                                               |  | Delaware               |  |                 
|ICG ChoiceCom, L.P. (formerly known as CSW/ICG ChoiceCom, L.P.)                                                              |  | Delaware               |  |                 
|ICG ChoiceCom Management, LLC (formerly known as Southwest TeleChoice Management, LLC and CSW/ICG ChoiceCom Management, LLC) |  | Delaware               |  |                 
|ICG Corporate Headquarters, L.L.C.                                                                                           |  | Colorado               |  |                 
|ICG Enhanced Services, Inc.                                                                                                  |  | Colorado               |  |                 
|ICG Equipment, Inc.                                                                                                          |  | Colorado               |  |                 
|ICG Funding, LLC                                                                                                             |  | Delaware               |  |                 
|ICG Holdings, Inc. (formerly known as IntelCom Group (U.S.A.), Inc.)                                                         |  | Colorado               |  |                 
|ICG Holdings (Canada) Co.                                                                                                    |  | Nova Scotia            |  |                 
|ICG Mountain View, Inc.                                                                                                      |  | Colorado               |  |                 
|ICG Ohio LINX, Inc. (formerly known as Ohio Local Interconnection Network Exchange Co.)                                      |  | Ohio                   |  |                 
|ICG NetAhead, Inc. (formerly known as NETCOM On-Line Communication Services, Inc. and ICG PST, Inc.)                         |  | Delaware               |  |                 
|ICG Services, Inc.                                                                                                           |  | Delaware               |  |                 
|ICG Telecom Canada, Inc.                                                                                                     |  | Federal Canadian       |  |                 
|ICG Telecom Group, Inc. (formerly known as ICG Access Services, Inc.)                                                        |  | Colorado               |  |                 
|ICG Telecom Group of Virginia, Inc.                                                                                          |  | Virginia               |  |                 
|ICG Telecom of San Diego, L.P. (formerly known as Linkatel of California, L.P.)                                              |  | California             |  |                 
|ICG Tevis, Inc.                                                                                                              |  | Delaware               |  |                 
|NikoNet, LLC                                                                                                                 |  | Georgia                |  |                 
|PTI Harbor Bay, Inc.                                                                                                         |  | Washington             |  |                 
|TransAmerican Cable, Inc.                                                                                                    |  | Kentucky               |  | MidAmerican Cable
|Western Plains Finance                                                                                                       |  | Nevada                 |  |                 



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