AT&T
TynTec GmbH
WNT telecommunication GmbH
Globacom Limited
IDT Global Limited
Ukrtelecom
Telecommit Inc.
TimeWarner Telecom
Carphone Warehouse Networks / Opal
China Netcom(Europe) Operations Ltd.
ACN Europe BV
Amitelo Deutschland GmbH
N/A
Emirates Integrated Telecommunications Company, PJSC
The Carphone Warehouse Networks
DHIRAAGU PTE LTD
TWT SpA
Elisa
Kalaam Telecom Bahrain B.S.C
REFER TELECOM
Allstream
Telefonica International Wholesale Services
Kortel Communications Inc.
Kingston Communications
Onicommunications
Latinode Europe GmbH
Capaital City Service
Metrobeam Wireless Telecommunications ( Kulacom )
Clarus International (UK) Ltd.
PCCW
TUŠ TELEKOM d.d.
Tectip
Crowley Data Poland Sp. z o.o.
CRYSTAL CALLS LIMITED
OMNINET LTD.
OPTUS
Linxtelecom Estonia OÜ
Telecall
G-Biz
Worldwebnet Telecom
Hutchison Global Communications
JSC @Zebra Telecom@
Maxteleco.ltd
IP Telecom Center - Saigon Postel Corp.
PTCL
Rostelecom
Cronford Trading Ltd
TELINTEL LTDA
Rajco Communication GmbH
Omantel
Anwarnet
Maxis Communications Berhad
KPN
Breezecom FZC
Median Telecom GmbH
VOIX Global Sdn. Bhd.
Sky Telecom AG
VSNL INTERNATIONAL
Latinode
Xtratelecom
Canar Telecom Ltd
Epsilon Telecommuications Ltd
BT Global Services
Speedflow Communications Limited
Synapse Telecom
Bergeta Commercial Ltd
Completel
ZCarrier Inc.
VERSCOM WHOLESALE UK
Tata Communications Ltd
Milleni.com GmbH
A.A.Smartcomtech LTD
CTBC
Eircom
PTT Communicatios-group
FIBERTEL Trans Balkan Telecom AS
Telekom Slovenije, D.D.
ACRiS Telecom GmbH
Business Sviaz Holding
Vivodi Telecom SA.
South China Telecom
Vovida Technologies Limited
Televox LTD
STS - Swiss Telecom Solutions
Wavecrest
YYC Enterprises Limited
Engage Coms
JSC Moldtelecom
WholeSwitch Telecom Holdings Limited
Spiritel Technologies
Latino Communications
Callax Telecom Holding GmbH
PALTEL
Hilf Telecom BV
SC Net-Connect Internet SRL
Vodafone Essar South Limited
Callax Telecom
Prime Telecom
OTEGlobe S.A.
Net-Connect Internet s.r.l.
Telekom Malaysia (UK) Limited
Telefonica
ORANGE
HT Mostar
Tellfon
Bharti Airtel Ltd.
DNS:NET Internet Service GmbH
Tiscali International Network
BT
Mox Telecom AG
Intertalk International
Dial Telecom
Sound Telecom (UK)
Six Telecoms Company Limited
Global e Networks
TOUBACOM
Montan Telecom AG
Telenor Global Services
Ventelo Sverige AB
Next Generation Network Solutions
Cable and Wireless
Coolwave Communications B.V.
Nowtel UK Ltd
Cosmofon
EMATEL
Minutesxchange Communications
Project Communications SPA
T-Systems Austria GesmbH/Deutsche Telekom
Batelco Jordan
KDDI Europe Ltd.
Acord Telecom
Viacloud Inc.
Plaxis telecom
QSC AG
talk global telecommunication gmbh
EXCEL
GTS-Datanet Telecommunications Ltd.
P-GROUP S.A.L ( OFFSHORE)
Protel Offshore S.A.L
Smile Telecom International B.V.
T-Systems Austria, ICSS
Wharf T&T Limited
NEW WORLD TELECOM
Primus Telecommunications Inc
HELLAS ONLINE S.A.
Romtelecom
Bond Consulting
Belgacom International Carrier Services
Novatel
Deutsche Telekom AG
LANCK Telecom
IP-Only
BTELECOM
Golden Telecom
CITIC 1616 Holdings Limited
Ecotel Communication AG
NetConnect-Internet
Dollarphone Corporation
Verizon Italia SpA
MediaRing Ltd.
City Communications (SE) Limited
Telecom New Zealand
Express Teleservice Corp. d.b.a. LANCK Telecom
M-Link
Swisscom (Schweiz) AG
Carrier Community LTD
BRASIL TELECON
SWIFTNET LTD
Singapore Telecommunications Limited
Versatel Sued GmbH
Heswick Properties Limited London
Nuetel Communications
Longphone
Teleglobe - A VSNL International Company
NZ Phone Cards
OTEnet Telecommunications Limited
Wateen Telecom
Infocomm Consultancy Ltd.
Calltrade Carrier Services
REACH UK
France Telecom Group
Awantel GmbH
Planetsky
Telecom Italia Sparkle
nextcarrier telecom inc.
IPage Telecom
Xtec Communications Ltd
Gateway Communications Africa (UK) Ltd
SMA-Inclarity Telecommuincations Ltd
Bezeq International Ltd.
Borusan Telekom
KPN Global Carrier Services
PLDT Co.
Telekom Austria TA AG
Rawabi telecommunications and Software
PCCW Global
Reliance Communications Ltd.
Telefònica Deutschland GmbH
JAZZTEL
Easycom Exchange SARL
eTel Austria Gmbh & CoKG
PM² Telecommunication GmbH
Multiplex Netzwerk Kompanie GmbH
Surfcreek Communications, Inc.
Iskon Internet d.d.
Netvision 013 Barak LTD.
ANTEL
Xconnect
FPT Telecom
SOFTCOMMS FZC
Vinculum Communications
Viacomm Limited
iBasis, Inc.
Asiakomnet Multimedia
Lycatel Services Limited
Primetel PLC LTD
TLKComm Company Ltd
Catcom USA
Neuf Cegetel
Vcore
Telco Global
NOBEL Limited
Verizon Businesss
Sector 7 Networks, Ltd
Videsh Sanchar Nigam Limited
Zephyr (MGI Media AG)
Dhiraagu Pvt Ltd
Akton
3U TELECOM INC
Siponomic B.V.
WaveCrest UK Ltd
Nomi Mobile Limited
Imaginge Communications Group
Fusion Telecommunications Int.
Interdirect Tel Limited
Qwest Communications
WBS Connect
dixiTel NV
Tata Communications
Telekomunikacja Kolejowa
IT TEL d.o.o.
PCCW Global Limited
Edge Telecom GmbH
VoIPInvite Inc
Lannet Communications S.A.
Protel International LLC
JAINA SYSTEMS NETWORK, INC
Dial Telecom Romania
IDT EUROPE
Bayan Telecommunications Inc
2Connect
CHEERS INTERNATIONAL TELECOM LTD
Lynxtel Limited
Thuraya Satellite Telecommunications Company
JJ Telecoms Ltd
UIS Telecom Limited
ASP
VOX telecom SA
Golden Telecom / Sovintel
TEO LT, AB
PAETEC
Entanet International
Zanatel
Boomerangip S.A.
Quantum Telecom
StarHub Limited
Algonet Telecom
Slovak Telekom, a.s.
Bankai International Pvt. Ltd.
IPsmarx Technology, Inc.
Swiss Update NT AG
DATEK TELECOM SRL
Qicomm Limited
Altec Telecoms S.A
Telekom Malaysia Berhad
HL komm Telekommunikations GmbH
BT (Germany) GmbH & Co oHG
Arbinet Inc.
Thuraya Telecommunication
Capital City Service Ltd
Rodcom Europe Ltd
Apelby Communications
LONGPHONE SAS
Solaris Communications Inc.
Chief Telecom
Level 3 Communications
Gilat Satcom
Endstream Communications, LLC
Covad Communications
France Telecom Group - ICSS
Superonline
VoipMefree
Aircel
COLT
Sirius Telecom
MGI media AG
BNS Telecom Group Plc
Marco Polo Communications Group, Inc
INTERNEXA
XOTel SIA
Bangla Trac Communications
Pacnet
THUS PLC
Telekomunikacja Polska (Polish Telecom)
Telecom New Zealand UK Limited
Oy Cubio Communications Ltd
Triangle Communications AG
ROSHAN
Global Telecom Group Inc.
Viastar LTD
SAFARICOM LIMITED
P-Group
Gamma Telecom
IDT
Tellcom
Tawasul Telecom
EITC
BTL
Breezecom
Broadband Telecom Inc
Verizon
Logincall
Calltrade Carrier Services AG
HanseNet Telekommunikation GmbH