Exhibit 21.1 Subsidiaries of PTEK Holdings, Inc. SUBSIDIARY JURISDICTION OF ORGANIZATION - ------------------------------------------------------------------------------------- American Teleconferencing Services, Ltd. Missouri d/b/a Premiere Conferencing d/b/a Premiere Technologies - ------------------------------------------------------------------------------------- Comvave GmbH Germany - ------------------------------------------------------------------------------------- Comwave UK, Ltd. United Kingdom - ------------------------------------------------------------------------------------- Connaught Commercial Services Limited United Kingdom - ------------------------------------------------------------------------------------- EBIS Communications, Inc. Georgia - ------------------------------------------------------------------------------------- Intellivoice Communications, Inc. Delaware - ------------------------------------------------------------------------------------- Orchestrate.com, Inc. Georgia - ------------------------------------------------------------------------------------- PCI Acquisition Corp. Georgia - ------------------------------------------------------------------------------------- Premiere Argentina Holding, L.L.C. Georgia - ------------------------------------------------------------------------------------- Premiere Brazil Holdings, L.L.C. Georgia - ------------------------------------------------------------------------------------- Premiere Communications, Inc. Florida d/b/a Premiere Enhanced Calling d/b/a Premiere Technologies - ------------------------------------------------------------------------------------- Premiere Technologies (HK) Ltd. Hong Kong - ------------------------------------------------------------------------------------- Premiere Technologies (United Kingdom) Limited United Kingdom - ------------------------------------------------------------------------------------- PT Transtelindo Tritamo Indonesia - ------------------------------------------------------------------------------------- PTEK Communications (Italy) S.r.l. Italy - ------------------------------------------------------------------------------------- PTEK Communications AG Switzerland - ------------------------------------------------------------------------------------- PTEK Communications and Data Services GmbH Austria - ------------------------------------------------------------------------------------- PTEK Communications GmbH Germany - ------------------------------------------------------------------------------------- PTEK Communications Limited United Kingdom - ------------------------------------------------------------------------------------- PTEK Holdings GmbH Germany - ------------------------------------------------------------------------------------- PTEKVentures.com, Inc. Nevada - ------------------------------------------------------------------------------------- Swift Global Communications Hong Kong Ltd. Hong Kong - ------------------------------------------------------------------------------------- Swift Global Communications, Inc. Delaware - ------------------------------------------------------------------------------------- Swift Global International Ltd. New York - ------------------------------------------------------------------------------------- Transmit International Limited United Kingdom - ------------------------------------------------------------------------------------- US Comwave Communications, Inc. New York - ------------------------------------------------------------------------------------- ViTel Bureau Services Limited United Kingdom - ------------------------------------------------------------------------------------- ViTel International, Inc. New York - ------------------------------------------------------------------------------------- ViTel Limited United Kingdom - ------------------------------------------------------------------------------------- Voice-Tel Canada Limited Canada d/b/a Premiere Voice and Data Messaging d/b/a Premiere Technologies - ------------------------------------------------------------------------------------- Voice-Tel Enterprises, Inc. Delaware d/b/a Premiere Voice and Data Messaging d/b/a Premiere Technologies - ------------------------------------------------------------------------------------- Voice-Tel Pty Ltd. Australia, New Zealand - ------------------------------------------------------------------------------------- X Plus Germany - ------------------------------------------------------------------------------------- Xpedite Global Communications Pte. Ltd. Singapore - ------------------------------------------------------------------------------------- Xpedite International Pty Limited Australia - ------------------------------------------------------------------------------------- Xpedite InternationalLimited New Zealand - ------------------------------------------------------------------------------------- Xpedite Malaysia Sdn Bhd Malaysia - ------------------------------------------------------------------------------------- Xpedite Scandinavia A/S Holding Scandinavia - ------------------------------------------------------------------------------------- Xpedite Systems Canada, Inc. Canada d/b/a Premiere Document Distribution d/b/a Premiere Technologies - ------------------------------------------------------------------------------------- Xpedite Systems Holdings (UK) Limited United Kingdom - ------------------------------------------------------------------------------------- Xpedite Systems Holdings S.A.R.L. France - ------------------------------------------------------------------------------------- Xpedite Systems Japan, Inc. Japan - ------------------------------------------------------------------------------------- Xpedite Systems Korea Ltd. Korea - ------------------------------------------------------------------------------------- Xpedite Systems Limited United Kingdom - ------------------------------------------------------------------------------------- Xpedite Systems NV/SA Belguim - ------------------------------------------------------------------------------------- Xpedite Systems Participation E.U.R.L. France - ------------------------------------------------------------------------------------- Xpedite Systems Worldwide, Inc. Delaware - ------------------------------------------------------------------------------------- Xpedite Systems, Inc. Delaware d/b/a Premiere Document Distribution d/b/a Premiere Technologies - ------------------------------------------------------------------------------------- Xpedite Systems, S.A. France - ------------------------------------------------------------------------------------- Xpedite Sytems Finance S.N.C. France - ------------------------------------------------------------------------------------- Xpedite Taiwan Ltd. Taiwan - -------------------------------------------------------------------------------------