EXHIBIT 21.1 SUBSIDIARIES OF PTEK HOLDINGS, INC. JURISDICTION OF SUBSIDIARY ORGANIZATION - ------------------------------------------------------------------------------- American Teleconferencing Services, Ltd. Missouri Comvave GmbH Germany Comwave UK, Ltd. England Connaught Commercial Services Limited England EBIS Communications, Inc. Georgia Intellivoice Communications, LLC 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 Premiere Conferencing (Canada) Limited Canada Premiere Conferencing (Hong Kong) Limited Hong Kong Premiere Conferencing (Ireland) Limited Ireland Premiere Conferencing (Japan), Inc. Japan Premiere Conferencing (UK) Limited England Premiere Conferencing GmbH Germany Premiere Conferencing Limited New Zealand Premiere Conferencing Pte. Ltd. Singapore Premiere Conferencing Pty Limited Australia Premiere Information Systems Pte. Ltd. Singapore Premiere Technologies (HK) Ltd. Hong Kong Premiere Technologies (United Kingdom) Limited England PT Transtelindo Tritamo Indonesia PTEK Communications and Data Services GmbH Austria PTEK Communications Limited England PTEK Management, LLC Delaware PTEK, Inc. Georgia PTEKVentures.com, Inc. Nevada Ptek Investors I LLC Delaware Ptek Partners LLC Delaware Ptek Ventures I LLC Delaware Swift Global Communications (HK) Limited Hong Kong Swift Global Communications, Inc. Delaware Swift Global International Ltd. New York Transmit International Limited England ViTel Bureau Services Limited England ViTel International, Inc. New York ViTel Limited England Voice-Tel Enterprises, LLC Delaware Voice-Tel of Canada Ltd. Canada Voice-Tel of New Zealand Limited New Zealand Voice-Tel Pty Ltd. Australia Xpedite IN Services GmbH Germany Xpedite Limited Taiwan Xpedite Scandinavia A/S Holding Scandinavia Xpedite Systems (Malaysia) Sdn. Bhd. Malaysia SUBSIDIARIES OF PTEK HOLDINGS, INC. (CONTINUED) JURISDICTION OF SUBSIDIARY ORGANIZATION - ------------------------------------------------------------------------------- Xpedite Systems AG Switzerland Xpedite Systems Canada, Inc. Canada Xpedite Systems GmbH Germany Xpedite Systems Holdings (UK) Limited England Xpedite Systems Holdings GmbH Germany Xpedite Systems Holdings S.A.R.L. France Xpedite Systems Japan, Inc. Japan Xpedite Systems Korea Ltd. Korea Xpedite Systems Limited New Zealand Xpedite Systems Limited England Xpedite Systems NV/SA Belgium Xpedite Systems Participation E.U.R.L. France Xpedite Systems Pty Limited Australia Xpedite Systems S.r.l. Italy Xpedite Systems Spain, S.A. Spain Xpedite Systems Worldwide, Inc. Delaware Xpedite Systems, Inc. Delaware Xpedite Systems, S.A. France Xpedite Systems Finance S.N.C. France