A list of some OSC customers:

• British Telecom
• Sun Microsystems
• Alcatel
• Control Data
• O2
• AAPT
• connect.com.au
• Ozemail
• Cogent
• Earthlink
• QWest
• Belgacom-Skynet
• Ohio University
• UCSB
• University of Tulsa
• Purdue University
• Spirit One
• The University of Winnipeg
• Info West
• DOVE Australia
• Global Gate Argentina
• LF.net GmbH
• Cybertours
• The University of Calgary
• teuto.net
• Lightspeed Net
• Oleane
• Ericsson Radio Systems
• Utrecht University
• Datagrama
• AT&T Unisource
• hotlinks.net.au
• interact
• Winshop
• Planet Italy
• BusinessOnline
• Capco Communications, Inc
• Urbanet SA
• RioLink Internet
• Premier1 Internet Services
• Seltek Internet
• Microlink Online
• Smarter Way
• germany.net
• BFM Networking
• D&E Supernet
• Soft-Tech
• ProAxis
• Denali Computer Systems
• Unisource NL
• Professional Internet
• Alternate Access
• Ram.Net
• Vianet
• InterQ
• Surfnet
• Novagate
• PacificNet
• Atlas Internet
• Prometheus Information Corp
• SouthWind Internet Access
• LJNet
• INSYNC
• Allways
• Innova
• Gold
• CNM Network
• Vicnet
• Westvic
• Synapse
• RMC Internet Services
• bART Internet Services
• Avtel Communications
• Compuware
• Discovernet
• PICS online
• One Earth
• debis Systemhaus Austria
• Internet Channel
• Netway Austria
• World Link Internet Australia
• Speedlink
• space.net
• Direct Connection
• Cineca
• Farside Communications
• Andinet
• NanoSpace
• One Net
• Kiss
• West Central Ohio Internet Link
• iXL
• NetCologne
• Ethical Services Network, Italia
• Bavaria Telecentrum
• CellularVision
• IBW Communications
• Easy Internet
• Datacom Caribe
• Internet 2Xtreme
• Netway AG
• Swiss Federal Institute of Technology
• Cylink Information Service
• DONet
• Francenet
• Planet Internet
• Internet Portugal
• Afnet Internet Services
• Weikfield Mnemonic Infonetworks
• Com Net Inc
• Inode Internet
• Facing Facts
• Picture Internet
• AIT Communications
• Richnet Inc
• Vline Freight
• Zoolink Communications
• Education IT
• Switch.Com
• Peak to Peak Internet
• Hemofarm
• Voicenet
• The Hub
• Midwest Internet
• TELE Greenland
• Netling
• Preferred Internet
• MoonStar
• The Rock Island Group
• CyberZone
• SofNet Inc
• Hogeschool Rotterdam & Omstreken
• Caribbean Internet
• Uninet
• Entanet
• Christelijke Hogeschool Ede
• Hogeschool Brabant
• Hogeschool voor Economische Studies Rotterdam
• University of Maastricht
• Hogeschool Limburg
• Haagse Hogeschool
• Utrecht School of Arts
• Ichthus Hogeschool
• Vrije Universiteit
• University of Amsterdam
• Hogeschool Amsterdam
• Hogeschool Zeeland
• Hogeschool van Utrecht
• Universiteit Leiden
• Christelijke Hogeschool Windesheim
• Christelijke Agrarische Hogeschool
• TH Thrijswijk
• AT&T EasyLink Services
• Good News internet
• Tortus-Tek
• Ideal Internet
• Eclipse Networking
• Bahnhof Internet
• Axiom Technologies
• World Online France
• Solcon BV
• Siemens Busines Services, Turkey
• Fort Wayne Internet
• Hexanet
• DirecTell Inc
• EL&C Baillieu Stockbroking
• MCB Consult
• Paliwal Financial Services
• Sofnet Solution Inc
• EcomServ
• The Internet Business
• The Internet Company
• INternet Access AG
• Open University of the Netherlands
• DownCity
• World Trade Network Inc
• Royal Military College of Canada
• Escape Communications Corp
• A-Z Net.Com
• Satelcom UK Ltd
• LocaNet
• KomTel GMBH
• Quik International
• AIASnet SA
• I-Land INternet Services
• Internet of the Sandhills
• Global Info-Links
• Internet TV Australia
• Infrasecure
• HunterLink
• Hogeschool 's-Hertogenbosch
• Lamar Electric Internet Services
• Colnet International
• Intercom Online Inc
• Internet Texoma
• CRC Networks and Cables
• Teragen
• Impact Creativity Centre
• Worldwide Internet Services Holland
• True Communications Corporation
• Midwest Communications
• BMS Priority International
• Ashton Communications
• Infocom Technologies
• Interlinea 2000 Communicaciones
• Inficad Communications
• Netucate
• Next Generation IT
• Kath. Theological University Utrecht
• Raex Corporation
• Internet Solutions Inc
• Mosaic Communications
• IntroWeb
• net.workers Gmbh
• The Pressroom Online Services
• Alternex
• Ripnet
• Active-Net
• Kaos On-Line
• Ashton Communications Corp
• Jafa Internet
• Infase Communicaciones
• MMI Services
• Schlund & Partner
• Blue Planet NET
• Voss Net
• Craig Thompson
• SEG Network Technologies
• RP Internet Services
• Cientifica Peruana
• Mission Internet
• EmeraldNET
• KSI International
• Canvas Interactive
• NetNet Inc
• ZPR Express
• Beethoven Computer Services
• Rapp Buerosysteme
• Netstra
• Nordwest.Net
• University of Utah
• Kajaani
• Internet Revealed
• First Link Internet Services
• Winstar
• ESS/PR Webmasters
• Commercial Open Systems Inc
• Dataphone Communications Networks
• University of Ulm
• Telemovil
• Fidalgo Networking
• NetExcel
• Hong Kong Polytechnic University
• Synflux International
• innominate
• Internet Connections
• Lazerlink Internet Services
• Corporacion InterRed
• OnTheNet
• MB&T
• Vorguvara
• DeTeSystem
• Ideal Internet
• Netspace Online Systems
• Webfront
• CSNet
• First Network Group
• Swannet
• Allcomm Communications
• neuf telecom
• Easynet France
• University of Lethbridge
• PT Cyberindo Aditama
• Nikoma MediaWorks
• Kidz.Net Services
• Origin Brasil
• eWeb Australia
• GHG Corporation
• PRIMA SA
• Associated Internet Marketing Group
• Versatel Telecom
• American Network Communications
• Arconet Servicios
• Allegan Intemediate School District
• Southwest Research Institute
• Suite 224 Internet
• Goulburn Internet
• Sparknet
• IWBC ISP Services
• Webmail
• Umbrianet
• Griffin Information Systems
• Boone Online
• 1stup.com
• debis IT Service
• uni-X Software
• Mweb Interactive
• The Internet Company
• OzComm Corporation
• Comtech
• Access Internet
• Department for Environment, Heritage and Aboriginal Affairs
• Hogeschool von Arnhem en Nigmegen
• Al-Lujain Int
• Aros Net
• CWIA
• Internet Research Institute
• Spin Media Network
• Internet Express
• GlobalNet Grupa
• XMission
• Startec Communications
• BlueStar Communications
• US Internet
• Myna Communications
• ANS Communications
• Research Machines
• GlobalEyes Communications
• NorthPower
• UTA Telecom
• Escort-Net
• X-Stream Technologies
• Elite Internet Services
• Eurocomercial Informatica y Communicaciones
• HunterLink
• Australian Red Cross
• Planet Internet
• DDC
• Idecnet
• Northern Computers
• Actrix
• OnTheNet Qld
• Kamp Netzwerkdienst
• Bangladesh Telegraph and Telephone Board
• Tasmania's Access Server
• Netnam
• Eagle-I
• CNL CentralNet
• Improware
• Asnet
• UR Communications
• UUCom
• Online Advantage
• Dove Australia
• Universidad Federal de Santa Caterina
• Sibelius Academy
• Rochdale MBC
• CenturyTel
• ISP Channel
• Toplink Internet Services
• Net4India
• Internode Professional Access
• DelftNET
• Lanka Internet Services
• John Wiley & Sons Australia
• Esoterica SA
• Oersted Technology
• Computer.Net
• Malbanet Services Online
• United Business Communications
• SouthCorp Ltd
• London Fire Brigade
• Visionary Systems Inc
• Planet Online
• EliteCom Network
• Communications
• Opto Networks
• IndyNet
• EntelNet
• Integra Telecom
• Sun Microsystems Asia
• Advanced Digital Information System
• Cobgio Nacional
• Internet Alaska
• Adelphia Communicaitons
• La Poste France
• McLeod USA
• Muskogee Net
• Internet Services Argentina
• US Army
• Optus Communications
• Shareer Technics
• Shadowlink
• Interpacket Group
• Unitech Computer Systems Limited
• De Te System
• Glasshouse Business Networks
• Network WCS
• FastNet Corporation
• Leapfrog Technologies
• ADDIX Internet Services
• PT Indo Internet
• Pacific Resources Technology Corp
• FH Heilbronn
• Universitat des Saarlands
• Universitat Hohenheim
• Universitat Kaiserslautern
• Universitat Karlsruhe
• Universitat Konstanz
• Universitat Mannheim
• Universitat Tubingen
• BelWu Koordination
• Brain Net
• Worldlink Communications
• Level 3 Communications
• Centrin PT
• Atlantic.Net
• Internet Solutions
• i2eyenet.com
• Africa Online
• Multi Access BV
• Canaan Surfing Ltd
• Fish Internet
• ISDN-NET Inc
• Fish Internet
• Cain Internet Services
• WWW Communications ltd
• Tridel Technologies
• InfoChannel Ltd
• Rutgers University
• Zip.Net S/A
• Valley Business Equipment
• Startec PCI Communication
• Bezeq International
• Computer Sciences Corp
• RCOM Technologies
• I-55 Internet Services
• Gatesway Online
• MS Internet Services Online
• Cornell University Computer Science
• Telstra Corporation
• Anabb Online
• CISNet Inc
• Sky Internet Inc
• US Data Authority
• Cable & Wireless Hong Kong
• BlazeNet
• SkyNet de Colombia SA
• Red Cientifica Peruana
• Queensland University of Technology
• SuperLink Internet Services
• NetSpeed internet Communications
• UUNet Technologies
• EISA Limited
• Access net (Phils.) Inc
• Johnson Controls
• Woods Hole oceanographic Institution
• Mich.com, Inc
• Northwest Link
• South Net ltd
• DeTeSystem
• URSYS Pty ltd
• Entel SA
• Virga Jesse Ziekenmvis
• Integra Telecom
• Texas Networking Inc
• TeleMedicine and Advanced Technology Research Center
• Combellga ISP
• ProCom SRL
• MIXX online GmBH
• EL & C Baillieu Stockbroking Ltd
• IDXNet Pty Ltd
• NetCarrier Inc
• Microweb Inc
• Fiberlink Communications
• Globix
• International Telecommunications Systems, Inc
• TST On Ramp, Inc
• SOTA Technologies
• Pro.Net SRL
• DataCentric Communications Corp
• GPM Internet
• METABOX AG
• Department of Deference
• Internet Protocol Ltd
• Castel NV
• EUnet Austria
• TRW Inc
• NeoSmart.com.Inc
• Dot Communications Pty Ltd
• DataOffice Network
• TeleSat International Ltd
• ViaNet
• John Wollaston Anglican Comm School
• Gantek Computer & Consultancy Trade Inc
• MeduNet
• Orica Australia
• Panserivce i F.Cuseo & C
• Linkserve Limited
• Easynet Belguim
• Quadrix Solutions Inc
• Internet Connect Centre
• Voyager Information Networks
• Trak Online India Pvt Ltd (Net4India)
• LavaNet Inc
• Mandarin Communications Ltd
• Techcom.net
• CrossPaths Internet Services
• Destia Communications Inc
• Kappa Infotech Pvt ltd
• Anet Iletisim Hiemetleri Ltd
• Internet Access USA Group
• Dymanic Network Technologies
• Everelite Tech Co Ltd
• Systec Computer Associates Inc
• Nacamar Data Communications
• Network gaaca.net
• IFarm Network Inc
• LogicWorld Internet
• Knoware BV
• WSBE TV Channel 36
• e.comp Engineering GmbH
• Cable & Wireless Network Indonesia
• Spectrum Softtech Solutions (P) Ltd
• Saarbrucker Zeitung Druck und Verlag GmbH
• JWC Internet Services
• VIF Internet
• Interlink Technology
• TLK Computer GmbH
• Amaze Technologies Pty Ltd
• XecuNet LLC
• Telia Network Services
• The Spa online services
• Kvalito IT AS
• CAIS Internet Inc
• VMS Keytrade
• Bridge Online Systems
• COTAS LTDA
• Rural Networking Partners LLC
• COTEOR LTDA
• Lakes Internet
• Ferguson Enterprises Inc
• pdv-systeme Sachsen GmbH
• ASI Communications Inc
• Kraft-S, JSC
• Flint Hills Internet
• NETIX Ltd
• Power Net Global
• FULLnet Inc
• Safe Sights Inc
• Datelnet Inc
• Empresa de Telecomunicaciones del Hans
• Sonera Nederland BV
• EuroStar (UK) Ltd
• debis Systemhause
• OneHundred Services Inc
• Genias Internet
• El Sitio
• ISDNet France
• Internet Ireland
• ELSYS Ltd
• Nonstop
• Lucent Technologies
• Laserlink Communications
• Telecomunicaciones Skytel CA
• Internet Direct Inc
• Westend GmbH
• Deutche Telekom
• Fox Chase Cancer Center
• WorldXchange Communications
• Cybernet Pty Ltd
• Network Resource Group
• RegSearch International
• Core Telecommunications
• BAR Informatik AG
• WorldOnline SRL
• Look-e.com Inc
• Turquoise Technologies Inc
• E-Phone Ltd
• Cotabe LTDA
• Carrier1 IK Ltd
• EIM
• Anemo Ltd
• S & B Technology Consultants
• Peakhour Pty Ltd
• Vortex Inc
• University of Manchester
• ODD Software Pty Ltd
• Brand Communications
• Netlink Ltd
• COMNEXO SA
• Junroo Netcommunications
• KJ Kirby & Associates
• SportBrain
• HKNet Co Ltd
• Runway Science & Technology
• PRAXITEL
• TSN Internet
• AUCS Communications Services
• AMK Hitline AG
• ISP Alliance, INC
• ITESM Campus Morelos
• KPNQWest Finland Oy
• Poweruser Technologies
• iReady Corporation
• FlashCom
• Sterling Cellular
• Frys Electronics Inc
• Dialup USA Inc
• Deakin University
• MailTV Pty Ltd
• JVLNET Internet Services
• G-Connect Ltd
• Ahmedabad Stock Exchange
• OTZ Telephone Cooperative Inc
• Bezeq International
• Superaje Communications
• Singapore Network Services
• HaseHet Telefongesellschaft
• Hogeschool van Amsterdam
• Impsat Fiber Networks
• Razorfish
• Nokia (UK)
• Hutman Inc
• Magnolia Belle Data Systems
• Front Range Internet
• Gemsoft
• Swift Globe (K)Ltd
• Relay Point inc
• Retail Multimedia Y Compufacion lTDA
• DATEVE. G
• debitel AG
• University of Massachusetts
• Mediacom S.r.l
• Backroads Internet Inc
• SunBeach
• Global Communications
• Inspire Net Ltd
• Micromuse Corporation
• BWH Anesthesia Foundation
• North Carolina State University
• Surya Mitra Internet
• DNA Internet
• Nokia Networks
• Technication Inc
• debis Systemhaus
• Daimler-Chrysler Aerospace
• Cable & Wireless Mitratel
• Impact Information Systems Corp
• VivaNet
• Pinpoint Pty Ltd
• Cable & Wireless Granada
• Argi.ch AG
• IP Tech AG
• Delanet Inc
• Burr Oak Tool and Gauge Company Inc
• Telecom Namibia
• Marsh Pty Ltd
• Enitel AS
• Nokia Austria
• ISP Limited
• Institut Catala de Technologi
• Mid Hudson Online
• DCS Internet
• Planetel
• Netherlands Organization for Applied Research TNO
• Edgerton Corp
• Gulfnet Intl-KEMS
• Ibernet Telematica
• Zet.net mbt Online
• MCN Millennium Communications Network AG
• Redback Networks International
• Agri-Valley Services
• Powernet Inc
• Telstra Corporation
• MATAVNet Ltd
• New Wave Industries Inc
• Techische Univeriteir Delft
• BT telecomunicaciones SA
• Interkom (Pty) ltd
• Yipes Communicaitons Inc
• Australia Meat Holdings
• Verkkotieto Oy
• PROXAD
• Cybernet
• ICON Technologies
• UNI2 Lince Telecomunicaciones
• NeoNova Network Services
• Kast-Telecom
• Pasminco Australia Ltd
• University of Oregon
• OJSC SeverTransCom
• Telekommunikation Mitlergs Ruhrgebiet
• Micon Co
• Furman University
• World Online International
• Alta Internet Business Centres
• NeTimes Informations Technology
• AlphaLink
• Epicnet
• Cable & Wireless Thailand
• IFX Corporation
• Intrez Net
• DiGi Telecommunications
• TELECEL
• Cash Out
• Sinclair Knight Merz
• ViaWest
• Diggy Australia
• Union Deutsche Lebensmittelwerke
• Cable & Wireless HKT
• Delfi UAB
• Delmarva Online
• Skytel
• British Telecom Global Mobile Internet
• DHL International
• Argosy InfoTech
• Montana Internet Corp
• Nedelco Inc
• Ortel Communications Ltd
• Mercantile Communications Pvt Ltd
• HighwayOne Gmbh
• Main Media Gmbh
• Washington University of St Louis
• Chep International
• Benchmark Certification
• BadgerClaw Inc
• Politecnico di Milano
• T.S.I.P.S.A
• Pacific Wireless
• And many other serious ISPs...