longest/match

Longest Match / Organisations

Directory

Organisations

Who address space is registered to, ranked by how much they hold. The 5,000 largest of 89,970 are listed; the search box covers all of them. IPv4 is counted in addresses and IPv6 in /64 networks, and the two are never added, because no unit makes them comparable. Registered holders come from the bulk whois that RIPE, APNIC and AFRINIC publish. ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.

Organisations
89,970
Holding a /22 or any IPv6
46,606
IPv4 space named
52%
Registries covered
3 of 5

OrganisationIPv4 addressesIPv6 /64sBlocksRegistry
Poste Italiane S.p.A.68,35238,654,705,66416RIPE
Angelnet Limited68,35234,358,165,50420RIPE
The University of Wollongong68,3524,294,967,29611APNIC
Nordea Bank Abp68,35265,5368RIPE
Leonardo S.p.A.68,09634,359,738,3688RIPE
marbis GmbH68,09634,359,738,36879RIPE
Ministry of Health68,0968,589,934,5925APNIC
Posix Systems (Pty) Ltd68,0964,295,032,83213AFRINIC
JSC IOT68,0964,294,967,29667RIPE
The Cloud Networks Limited68,0964,294,967,29614RIPE
Zajil International Telecom Company KSCC68,0964,294,967,2968RIPE
CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Developpement68,096-2RIPE
Direction generale du numerique et des systemes d'information (DGNSI) Etat de Vaud68,096-2RIPE
Paul Scherrer Institut68,096-2RIPE
GeoSphere Austria67,969131,0726RIPE
Linkt SAS67,84077,309,411,32842RIPE
Berner Fachhochschule67,84034,359,803,9045RIPE
Saint Gobain Group Digital & IT International SAS67,84034,359,738,36811RIPE
Schweizerische Radio- und Fernsehgesellschaft67,84034,359,738,3684RIPE
Universitaet Basel67,84034,359,738,3684RIPE
WS Telecom Inc67,84034,359,738,368158RIPE
Australian Crime Commission67,8404,295,032,8325APNIC
Deninet KFT67,8404,294,967,29617RIPE
University of Kent67,8404,294,967,2964RIPE
Department of Transport67,840-6APNIC
Technische Universitaet Dortmund67,840-3RIPE
EDIS GmbH67,61434,359,738,368279RIPE
Sat-Trakt D.O.O.67,584171,798,691,84040RIPE
ADP GSI FRANCE SAS67,58434,359,803,90410RIPE
Kemira Oyj67,58434,359,803,9045RIPE
GOVERNMENT TECHNOLOGY AGENCY67,58421,476,802,56031APNIC
ComClark Network & Technology Corp67,5844,294,967,2968APNIC
Digital Ocean, Inc.67,5844,294,967,2964APNIC
Embriq AS67,5844,294,967,2964RIPE
EntServ UK Limited67,5844,294,967,2966RIPE
MTN CONGO67,5844,294,967,2964AFRINIC
NASK Spolka Akcyjna67,5844,294,967,2965RIPE
Russmedia IT GmbH67,5844,294,967,296119RIPE
SPTEL PTE. LTD.67,5844,294,967,2969APNIC
Vodacom Mocambique S.A67,5844,294,967,2963AFRINIC
Vodacom Tanzania Ltd67,5844,294,967,2964AFRINIC
Anglo American South Africa (Pty) Ltd67,584-8AFRINIC
Australian Postal Corporation67,584-2APNIC
Cheung Yuk Tong Aaron67,584-3APNIC
Conocophillips Norge Corporation67,584-3RIPE
CONTROL DATA (THAILAND) COMPANY LIMITED67,584-2APNIC
Internetbolaget Sweden AB67,584-189RIPE
NTT Australia Pty Ltd67,584-2APNIC
HL komm Telekommunikations GmbH67,5764,294,967,29612RIPE
NCC Sverige AB67,504-278RIPE
Lantmateriet67,328196,60811RIPE
EgyNet67,328-23AFRINIC
Fonterra Co-operative Group Ltd67,328-4APNIC
University of Sydney67,328-7APNIC
Polismyndigheten67,11265,536213RIPE
Council of the EU, General Secretariat67,07234,359,738,3684RIPE
XFone 018 Ltd67,07234,359,738,36811RIPE
LINZ STROM GAS WAERME GmbH fuer Energiedienstleistungen und Telekommunikation67,0724,295,032,8328RIPE
American Express Travel Related Services Company, Inc67,0724,294,967,2968RIPE
Totalforsvarets Forskningsinstitut, FOI67,07265,5368RIPE
Universita' degli Studi di Napoli Federico II67,07265,5368RIPE
Universite de Fribourg67,072-2RIPE
University of Newcastle upon Tyne67,072-4RIPE
Ford-Extranet66,87265,53623RIPE
Swedbank AB66,8364,294,967,2968RIPE
Dataport AoR66,81634,359,803,9045RIPE
Universitaet zu Koeln66,81634,359,738,3685RIPE
4iG Telecommunications Holding Zrt66,8164,294,967,2969RIPE
Institute of Technology Bandung66,8164,294,967,2964APNIC
Umea University66,816131,0726RIPE
Universiteit Twente66,816131,0726RIPE
Universitaet St. Gallen66,81665,5363RIPE
Acer Computer GmbH66,816-5RIPE
Defence Science and Technology Laboratory66,816-6RIPE
Department of the Premier and Cabinet66,816-3APNIC
Department of Transport and Main Roads66,816-3APNIC
Macquarie University66,816-3APNIC
NextGen.Net Pty Ltd66,816-4APNIC
Technische Universiteit Eindhoven66,816-3RIPE
Toi Ohomai Institute of Technology66,816-3APNIC
GTS Telecom SRL66,7044,294,967,29645RIPE
Ceske vysoke uceni technicke v Praze66,58665,5379RIPE
BKW Energie AG66,56465,5364RIPE
TELCO OI SAS66,56068,719,476,7363AFRINIC
FZI Forschungszentrum Informatik66,56034,359,803,9044RIPE
Ministero della Difesa66,56034,359,803,9044RIPE
Universitaet Klagenfurt66,56034,359,803,9044RIPE
Andritz AG66,56034,359,738,3683RIPE
Broermann Holding GmbH66,56034,359,738,3683RIPE
Centre des technologies de l'information de l'Etat66,56034,359,738,3683RIPE
Euro-Information-Europeenne de Traitement de l'Information SAS66,56034,359,738,3683RIPE
Exa Networks Limited66,56034,359,738,3685RIPE
Flughafen Muenchen GmbH66,56034,359,738,36818RIPE
HeLi NET Telekommunikation GmbH & Co.66,56034,359,738,3686RIPE
Helse Vest IKT AS66,56034,359,738,3684RIPE
Johann Wolfgang Goethe-Universitat Frankfurt am Main66,56034,359,738,3683RIPE
Koninklijke Ahold Delhaize N.V.66,56034,359,738,3683RIPE
NHS National Services Scotland66,56034,359,738,3683RIPE
Ruhr-Universitaet Bochum66,56034,359,738,3685RIPE
Statens Vegvesen66,56034,359,738,3683RIPE
Statkraft SF66,56034,359,738,3683RIPE
Universitaet Muenster, CIT66,56034,359,738,3683RIPE
Universitaet Siegen66,56034,359,738,3683RIPE
Service-now.com66,5608,589,934,5923APNIC
AEMO - Australian Energy Market Operator Limited66,5604,294,967,2963APNIC
AURA Fiber A/S66,5604,294,967,2965RIPE
CELTEL DRC66,5604,294,967,2963AFRINIC
European Centre for Medium-Range Weather Forecasts (ECMWF)66,5604,294,967,2963RIPE
GRIFFITH UNIVERSITY66,5604,294,967,2963APNIC
Herault Telecom SAS66,5604,294,967,2964RIPE
Junta de Andalucia66,5604,294,967,2963RIPE
Megaport (UK) Limited66,5604,294,967,2963RIPE
Metropolitan Health Service66,5604,294,967,2963APNIC
Web Africa Networks (Pty) Ltd66,5604,294,967,2963AFRINIC
Wirels Connect (PTY) Ltd66,5604,294,967,2963AFRINIC
Universite Catholique de Louvain66,5601,114,1127RIPE
Arbetsformedlingen66,560131,0725RIPE
Lumina Broadband UAB66,56065,536232RIPE
Rumahweb66,56065,5369APNIC
University of Reading66,56065,5365APNIC
University of Sussex66,56065,5366RIPE
Assumption University66,560-4APNIC
HDI AG66,560-2RIPE
Intracom Single Member S.A. Telecom Solutions66,560-5RIPE
JSC "ER-Telecom Holding" Rostov-na-Donu Branch66,560-36RIPE
National Oceanography Centre66,560-5RIPE
Queensland Department of Education66,560-2APNIC
Skane Lans Landsting66,560-2RIPE
Stichting Sint Franciscus Vlietland Groep66,560-2RIPE
Swinburne University of Technology66,560-2APNIC
Syniverse Technologies SARL66,560-5RIPE
The ESRF66,560-2RIPE
Universitaet Augsburg66,560-2RIPE
University of Otago66,560-5APNIC
University of Stellenbosch66,560-2AFRINIC
DPG Media Group NV66,52834,359,738,3686RIPE
Neos Networks Limited66,49734,359,738,3683RIPE
JSC "ER-Telecom Holding" Tomsk Branch66,4321,02442RIPE
Vysoka skola banska - Technicka univerzita Ostrava66,322196,61214RIPE
Brno University of Technology66,30434,360,066,0486RIPE
Australian Communications and Media Authority66,3044,294,967,2964APNIC
Australian Federal Police66,3044,294,967,2964APNIC
Central Queensland University66,3044,294,967,2964APNIC
Katholieke Universiteit Leuven66,3044,294,967,2964RIPE
Nicolaus Copernicus University in Torun66,3044,294,967,2965RIPE
Fraunhofer-Institut fuer Kommunikation, Informationsverarbeitung und Ergonomie FKIE66,304131,0725RIPE
The University of Auckland66,304131,0724APNIC
Charite - Universitaetsmedizin Berlin66,30465,5364RIPE
TX Group AG66,30465,5364RIPE
Chulalongkorn University66,304-4APNIC
Hochschule Hannover66,304-2RIPE
Hong Kong University of Science and Technology66,304-3APNIC
MTA Wigner Fizikai Kutatokozpont66,304-2RIPE
SAIC VOLKSWAGEN AUTOMOTIVE CO.LTD.66,304-3APNIC
SAS AB66,304-4RIPE
The Open University66,304-2RIPE
Universitaet Bayreuth66,304-4RIPE
Universitaet des Saarlandes66,304-4RIPE
Sveriges Radio AB66,072131,0728RIPE
University of York66,05665,5375RIPE
Reliable Communications s.r.o.66,048206,158,430,20880RIPE
Schaeffler Technologies AG & Co. KG66,04834,359,738,3685RIPE
Zurich University of Applied Sciences (ZHAW)66,04834,359,738,3683RIPE
Rheinische Friedrich-Wilhelms-Universitaet Bonn66,04834,342,961,15210RIPE
The University of New England66,0484,295,032,8325APNIC
Charles Sturt University66,0484,294,967,2963APNIC
EDITH COWAN UNIVERSITY66,0484,294,967,2963APNIC
FASTMOS CO., LIMITED66,0484,294,967,2963APNIC
NETSTAR (SG) PTE. LTD.66,0484,294,967,2967APNIC
Queensland University of Technology66,0484,294,967,2963APNIC
University of Canterbury66,0484,294,967,2963APNIC
Department of Health66,04865,5363APNIC
Foundation of Research and Technology Hellas66,04865,5364RIPE
Universita' degli Studi di Roma Tor Vergata66,04865,5364RIPE
ANZ BANK NEW ZEALAND LIMITED66,048-3APNIC
City of Melbourne66,048-3APNIC
CoCre8 IT Services (PTY) LTD66,048-3AFRINIC
Ecole Normale Superieure de Lyon EPSCP66,048-3RIPE
Hochschule Worms66,048-3RIPE
James Cook University66,048-3APNIC
Landgate66,048-3APNIC
Max-Planck-Institut fuer Biochemie66,048-3RIPE
Meridian Energy Ltd66,048-2APNIC
Physikalisch-Technische Bundesanstalt66,048-3RIPE
Universitaet Hohenheim66,048-2RIPE
University of Tasmania66,048-3APNIC
UNIWERSYTET SLASKI W KATOWICACH66,048-3RIPE
Vattenfall AB65,856131,07215RIPE
Nebius B.V.65,80034,359,803,90412RIPE
Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH, Goettingen65,80034,359,738,3684RIPE
Technische Universitaet Graz65,79234,359,803,9044RIPE
Achmea Interne Diensten N.V.65,79234,359,738,3683RIPE
Berliner Hochschule fuer Technik65,79234,359,738,3683RIPE
Heinrich-Heine-Universitaet Duesseldorf65,79234,359,738,3683RIPE
INESC - Instituto de Engenharia de Sistemas e Computadores PCUP65,79234,359,738,3683RIPE
TKMS ATLAS ELEKTRONIK GmbH65,79234,359,738,3683RIPE
University of Liege65,79234,359,738,3683RIPE
ONATI65,7928,590,000,12814APNIC
Bedag Informatik AG65,7924,294,967,2963RIPE
Department of Parliamentary Services65,7924,294,967,2963APNIC
Inmarsat Global Limited65,7924,294,967,2963RIPE
Kasetsart University65,7924,294,967,2963APNIC
NEC Australia Pty Ltd65,7924,294,967,2963APNIC
NSW Department of Education65,7924,294,967,2963APNIC
S.N. Radiocomunicatii S.A.65,7924,294,967,2963RIPE
University of Southern Queensland65,7924,294,967,2963APNIC
FMV65,7924,294,836,2243RIPE
Universitaet Mannheim65,79233,619,9685RIPE
Technische Universitaet Darmstadt65,79216,777,2163RIPE
Rhodes University65,7921,048,5763AFRINIC
Axel Springer SE65,792131,0724RIPE
Aristotle University of Thessaloniki65,79265,5363RIPE
Audi AG65,79265,5363RIPE
AUSTRALIAN ELECTORAL COMMISSION65,79265,5363APNIC
Lappeenranta-Lahti University of Technology LUT65,79265,5363RIPE
Universita' degli Studi di Padova65,79265,5363RIPE
Actemium Cegelec GmbH65,792-2RIPE
Agricultural Research Council65,792-2AFRINIC
AVL List GmbH65,792-2RIPE
AWE PLC65,792-2RIPE
Brunei Shell Petroleum Company Sdn Bhd65,792-2APNIC
Charles Darwin University65,792-2APNIC
Currys Retail Ltd.65,792-2RIPE
Deutsches Zentrum fuer Luft- und Raumfahrt e.V.65,792-2RIPE
Electrabel SA65,792-2RIPE
Elsevier Limited65,792-2RIPE
Gulfnet International KEMS LLC65,792-2RIPE
Hansen Corporation Pty Ltd65,792-2APNIC
Institut Francais de Recherche pour l'Exploitation de la Mer - IFREMER65,792-2RIPE
International Telecommunication Union65,792-2RIPE
IT-Services der Sozialversicherung GmbH65,792-2RIPE
London School of Economics and Political Science65,792-2RIPE
Martin-Luther-Universitaet Halle-Wittenberg65,792-2RIPE
Phoenix Contact GmbH & Co. KG65,792-2RIPE
Pirkanmaan Hyvinvointialue65,792-2RIPE
Republique et Canton de Neuchatel65,792-4RIPE
SAPPI65,792-2AFRINIC
Science Technology Facilities Council65,792-2RIPE
Technische Universitaet Chemnitz65,792-2RIPE
Technische Universitaet Clausthal65,792-2RIPE
The University of Hong Kong65,792-2APNIC
Transpower65,792-2APNIC
UK Home Office (The Secretary of State for the Home Department)65,792-2RIPE
Universita' degli Studi di Genova65,792-2RIPE
Universitaet Potsdam65,792-2RIPE
Universitaet Rostock65,792-2RIPE
University of Glasgow65,792-2RIPE
University of Indonesia65,792-2APNIC
University of Salford65,792-2RIPE
University of South Africa65,792-2AFRINIC