Longest Match / Organisations

Directory

Organisations

Who address space is registered to, ranked by how much they hold. The 5,000 largest of 89,919 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. Holders come from the bulk whois RIPE, APNIC and AFRINIC publish, so North and South American holders are largely missing.

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Organisation	IPv4 addresses	IPv6 /64s	Blocks	Registry
Heinrich-Heine-Universitaet Duesseldorf	65,792	34,359,738,369	3	RIPE
INESC - Instituto de Engenharia de Sistemas e Computadores PCUP	65,792	34,359,738,369	3	RIPE
TKMS ATLAS ELEKTRONIK GmbH	65,792	34,359,738,369	3	RIPE
University of Liege	65,792	34,359,738,369	3	RIPE
ONATI	65,792	8,590,000,131	14	APNIC
Bedag Informatik AG	65,792	4,294,967,297	3	RIPE
Department of Parliamentary Services	65,792	4,294,967,297	3	APNIC
Inmarsat Global Limited	65,792	4,294,967,297	3	RIPE
Kasetsart University	65,792	4,294,967,297	3	APNIC
NEC Australia Pty Ltd	65,792	4,294,967,297	3	APNIC
NSW Department of Education	65,792	4,294,967,297	3	APNIC
S.N. Radiocomunicatii S.A.	65,792	4,294,967,297	3	RIPE
University of Southern Queensland	65,792	4,294,967,297	3	APNIC
Universitaet Mannheim	65,792	33,619,971	5	RIPE
Technische Universitaet Darmstadt	65,792	16,777,217	3	RIPE
Rhodes University	65,792	1,048,577	3	AFRINIC
Axel Springer SE	65,792	131,074	4	RIPE
Aristotle University of Thessaloniki	65,792	65,537	3	RIPE
Audi AG	65,792	65,537	3	RIPE
AUSTRALIAN ELECTORAL COMMISSION	65,792	65,537	3	APNIC
Lappeenranta-Lahti University of Technology LUT	65,792	65,537	3	RIPE
Universita' degli Studi di Catania	65,792	65,537	3	RIPE
Universita' degli Studi di Padova	65,792	65,537	3	RIPE
7Space SASU	65,792	-	31	RIPE
Actemium Cegelec GmbH	65,792	-	2	RIPE
Agricultural Research Council	65,792	-	2	AFRINIC
AVL List GmbH	65,792	-	2	RIPE
AWE PLC	65,792	-	2	RIPE
Brunei Shell Petroleum Company Sdn Bhd	65,792	-	2	APNIC
Charles Darwin University	65,792	-	2	APNIC
Currys Retail Ltd.	65,792	-	2	RIPE
Deutsches Zentrum fuer Luft- und Raumfahrt e.V.	65,792	-	2	RIPE
Duale Hochschule Baden-Wuerttemberg Mannheim	65,792	-	2	RIPE
Electrabel SA	65,792	-	2	RIPE
Elsevier Limited	65,792	-	2	RIPE
ENERGO-TELECOM LLC	65,792	-	2	RIPE
Gulfnet International KEMS LLC	65,792	-	2	RIPE
Hansen Corporation Pty Ltd	65,792	-	2	APNIC
Institut Francais de Recherche pour l'Exploitation de la Mer - IFREMER	65,792	-	2	RIPE
International Telecommunication Union	65,792	-	2	RIPE
Ionis Group - Ionis Schools of Technology and Management SAS	65,792	-	43	RIPE
IT-Services der Sozialversicherung GmbH	65,792	-	2	RIPE
London School of Economics and Political Science	65,792	-	2	RIPE
Martin-Luther-Universitaet Halle-Wittenberg	65,792	-	2	RIPE
Phoenix Contact GmbH & Co. KG	65,792	-	2	RIPE
Pirkanmaan Hyvinvointialue	65,792	-	2	RIPE
SAPPI	65,792	-	2	AFRINIC
Science Technology Facilities Council	65,792	-	2	RIPE
Technische Universitaet Chemnitz	65,792	-	2	RIPE
Technische Universitaet Clausthal	65,792	-	2	RIPE
The University of Hong Kong	65,792	-	2	APNIC
Transpower	65,792	-	2	APNIC
UK Home Office (The Secretary of State for the Home Department)	65,792	-	2	RIPE
Universita' degli Studi di Genova	65,792	-	2	RIPE
Universitaet Bielefeld	65,792	-	2	RIPE
Universitaet Rostock	65,792	-	2	RIPE
University of Glasgow	65,792	-	2	RIPE
University of Indonesia	65,792	-	2	APNIC
University of Salford	65,792	-	2	RIPE
University of South Africa	65,792	-	2	AFRINIC
University of the Witwatersrand	65,792	-	2	AFRINIC
WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business	65,792	-	2	RIPE
Svenskt Naringsliv Service AB	65,696	-	6	RIPE
Univerzita obrany	65,672	-	3	RIPE
Comenius University in Bratislava	65,664	65,537	3	RIPE
LEGO System A/S	65,640	34,359,738,369	5	RIPE
Neste Oyj	65,600	-	9	RIPE
Otto-Friedrich-Universitaet Bamberg	65,600	-	2	RIPE
Universitaet Kassel	65,600	-	2	RIPE
Hochschule Darmstadt	65,568	196,628	7	RIPE
Bruker Group Services SE	65,568	-	3	RIPE
Sjofartsverket	65,552	65,537	5	RIPE
Universitaet Salzburg	65,552	65,537	3	RIPE
Universitaet Passau	65,552	-	2	RIPE
Valmet Automotive Oy	65,552	-	2	RIPE
Statens Fastighetsverk	65,548	65,537	4	RIPE
Technische Hochschule Nuernberg Georg Simon Ohm	65,544	-	2	RIPE
University of South Bohemia in Ceske Budejovice	65,542	65,539	5	RIPE
Universidade Catolica Portuguesa	65,537	2	3	RIPE
Vrije Universiteit Brussel	65,536	34,359,803,906	3	RIPE
Budapest University of Technology and Economics	65,536	34,359,738,369	5	RIPE
European Patent Organisation	65,536	34,359,738,369	2	RIPE
Fraport AG Frankfurt Airport Services Worldwide	65,536	34,359,738,369	2	RIPE
GSI Helmholtzzentrum fur Schwerionenforschung GmbH	65,536	34,359,738,369	2	RIPE
Linde GmbH	65,536	34,359,738,369	2	RIPE
London Borough of Newham	65,536	34,359,738,369	2	RIPE
MAN Truck & Bus SE	65,536	34,359,738,369	2	RIPE
Pricewaterhousecoopers Services Limited	65,536	34,359,738,369	2	RIPE
Runware Ltd	65,536	34,359,738,369	6	RIPE
RWE Supply & Trading GMBH	65,536	34,359,738,369	2	RIPE
Swiss Armed Forces - AFCSO	65,536	34,359,738,369	2	RIPE
UK Health Security Agency	65,536	34,359,738,369	2	RIPE
Universitaet Bremen	65,536	34,359,738,369	2	RIPE
VSE NET GmbH	65,536	34,359,738,369	29	RIPE
Westdeutscher Rundfunk Koln	65,536	34,359,738,369	2	RIPE
IT-Dienstleistungszentrum Berlin	65,536	8,589,934,593	3	RIPE
The University of the South Pacific	65,536	4,295,032,834	3	APNIC
Algerie Telecom Mobile MOBILIS	65,536	4,294,967,297	2	AFRINIC
Amadeus Data Processing GmbH	65,536	4,294,967,297	2	APNIC
Auckland University of Technology	65,536	4,294,967,297	2	APNIC
Ausgrid	65,536	4,294,967,297	2	APNIC
Australian Bureau of Statistics	65,536	4,294,967,297	2	APNIC
Azercell Telecom Ltd	65,536	4,294,967,297	3	RIPE
Botswana Telecommunications Corporation	65,536	4,294,967,297	2	AFRINIC
BRACNet Limited	65,536	4,294,967,297	5	APNIC
Bulgarian Research and Education Network Association (BREN)	65,536	4,294,967,297	2	RIPE
CANAL + TELECOM	65,536	4,294,967,297	6	AFRINIC
COMCARE	65,536	4,294,967,297	2	APNIC
Comunidad Autonoma de la Region de Murcia	65,536	4,294,967,297	2	RIPE
Department of Agriculture, Fisheries and Forestry	65,536	4,294,967,297	2	APNIC
Department of Energy and Public Works	65,536	4,294,967,297	2	APNIC
Energex Limited	65,536	4,294,967,297	2	APNIC
European Parliament	65,536	4,294,967,297	2	RIPE
Flinders University	65,536	4,294,967,297	2	APNIC
Forewin Telecom Group Limited	65,536	4,294,967,297	10	APNIC
Fredrikstad kommune	65,536	4,294,967,297	2	RIPE
Generali Deutschland AG	65,536	4,294,967,297	2	RIPE
GENERAL MOTORS OVERSEAS DISTRIBUTION LLC	65,536	4,294,967,297	2	APNIC
Great Barrier Reef Marine Park Authority	65,536	4,294,967,297	2	APNIC
Infosys Limited	65,536	4,294,967,297	2	APNIC
Inland Revenue Department	65,536	4,294,967,297	2	APNIC
InnovaPuglia SpA	65,536	4,294,967,297	2	RIPE
Intelsat	65,536	4,294,967,297	2	AFRINIC
Jade Software Corporation Limited	65,536	4,294,967,297	2	APNIC
Kanar Telecommunication (Canar Telecom Co.Ltd)	65,536	4,294,967,297	6	AFRINIC
Land Information New Zealand	65,536	4,294,967,297	2	APNIC
La Trobe University	65,536	4,294,967,297	2	APNIC
manroland IP GmbH	65,536	4,294,967,297	2	RIPE
Massey University	65,536	4,294,967,297	2	APNIC
Mozambique Research & Education Network - MoRENet	65,536	4,294,967,297	2	AFRINIC
Nanyang Technological University	65,536	4,294,967,297	2	APNIC
NATCOM Development and Investment Limited	65,536	4,294,967,297	2	AFRINIC
National Informatics Centre	65,536	4,294,967,297	2	APNIC
National University of Singapore	65,536	4,294,967,297	2	APNIC
Ngee Ann Polytechnic	65,536	4,294,967,297	2	APNIC
NISZ National Infocommunications Service Provider Private Limited	65,536	4,294,967,297	3	RIPE
operational services GmbH & Co. KG	65,536	4,294,967,297	2	RIPE
Parlamentsdirektion	65,536	4,294,967,297	2	RIPE
Rannsokna- og haskolanet Islands hf.	65,536	4,294,967,297	3	RIPE
Samart Infonet Co., Ltd.	65,536	4,294,967,297	3	APNIC
Schneider Electric Industries SAS	65,536	4,294,967,297	2	RIPE
Singapore Polytechnic	65,536	4,294,967,297	2	APNIC
Sociale Verzekeringsbank ZBO	65,536	4,294,967,297	2	RIPE
STATENS KARTVERK	65,536	4,294,967,297	2	RIPE
Stichting Nederlandse Publieke Omroep	65,536	4,294,967,297	2	RIPE
S.W.I.F.T. SC	65,536	4,294,967,297	2	RIPE
Temasek Polytechnic	65,536	4,294,967,297	2	APNIC
UAB "Balticum TV"	65,536	4,294,967,297	2	RIPE
Uganda Telecom Ltd	65,536	4,294,967,297	2	AFRINIC
Universidad de Navarra	65,536	4,294,967,297	2	RIPE
Universitatsspital Zurich (USZG)	65,536	4,294,967,297	2	RIPE
University of Canberra	65,536	4,294,967,297	2	APNIC
University of Macau	65,536	4,294,967,297	2	APNIC
Woodside Energy Limited	65,536	4,294,967,297	2	APNIC
Universitaet Ulm	65,536	17,891,331	4	RIPE
Deutscher Wetterdienst	65,536	16,842,754	3	RIPE
Universitaet Konstanz	65,536	16,842,754	3	RIPE
Hochschule Luzern	65,536	16,777,217	2	RIPE
University of Nigeria	65,536	1,048,577	2	AFRINIC
Gemeente Delft	65,536	262,145	3	RIPE
Uitvoeringsinstituut Werknemersverzekeringen	65,536	262,145	4	RIPE
Arbeids- og velferdsetaten	65,536	196,611	4	RIPE
Zapadoceska univerzita v Plzni	65,536	131,078	5	RIPE
International Institute for Applied Systems Analysis	65,536	131,074	4	RIPE
Auswaertiges Amt	65,536	131,073	3	RIPE
Hochschule Aalen	65,536	131,073	3	RIPE
Technicka univerzita v Liberci	65,536	65,539	3	RIPE
Vysoka skola chemicko-technologicka v Praze	65,536	65,539	3	RIPE
ABSA (Amalgamated Banks of South Africa)	65,536	65,537	2	AFRINIC
Agfa Gevaert NV	65,536	65,537	2	RIPE
Aklagarmyndigheten	65,536	65,537	2	RIPE
ASSA ABLOY AB	65,536	65,537	2	RIPE
Australian Nuclear Science and Technology Organisation	65,536	65,537	2	APNIC
Bank Of Finland	65,536	65,537	2	RIPE
Bundesamt fuer Meteorologie und Klimatologie MeteoSchweiz	65,536	65,537	2	RIPE
Capgemini Finland Oy	65,536	65,537	2	RIPE
Centro Svizzero di Calcolo Scientifico	65,536	65,537	2	RIPE
Cooperatie AVEBE U.A.	65,536	65,537	2	RIPE
CRS4 Srl	65,536	65,537	2	RIPE
Departementenes sikkerhets- og serviceorganisasjon (DSS)	65,536	65,537	2	RIPE
Dienst voor het Kadaster en de openbare registers	65,536	65,537	2	RIPE
Eawag/Empa	65,536	65,537	2	RIPE
FIZ Karlsruhe - Leibniz-Institut fuer Informationsinfrastruktur GmbH	65,536	65,537	2	RIPE
Goteborgs universitet	65,536	65,537	2	RIPE
Government ICT Authority - Israel	65,536	65,537	2	RIPE
Helsingin kaupunki	65,536	65,537	2	RIPE
Hochschule Albstadt-Sigmaringen	65,536	65,537	2	RIPE
Hochschule Esslingen	65,536	65,537	2	RIPE
IHK Gesellschaft fuer Informationsverarbeitung mbH	65,536	65,537	2	RIPE
Joanneum Research Forschungsgesellschaft mbH	65,536	65,537	2	RIPE
Kriminalvardsstyrelsen	65,536	65,537	2	RIPE
Kristiansand Kommune	65,536	65,537	2	RIPE
Linkopings Kommun, LKDATA	65,536	65,537	2	RIPE
Lulea Tekniska Universitet	65,536	65,537	2	RIPE
Max-Delbrueck-Centrum fuer Molekulare Medizin in der Helmholtz-Gemeinschaft	65,536	65,537	2	RIPE
Medizinische Universitaet Wien	65,536	65,537	2	RIPE
Oesterreichische Kontrollbank Aktiengesellschaft	65,536	65,537	2	RIPE
Petroliam Nasional Berhad	65,536	65,537	2	APNIC
Region Ostergotland	65,536	65,537	2	RIPE
SCES COMMUNS IMT BUSINESS SCHOOL TELECOM SUD PARIS	65,536	65,537	2	RIPE
Skien Kommune	65,536	65,537	2	RIPE
Steiermaerkische Krankenanstaltengesellschaft mbH	65,536	65,537	2	RIPE
Technical University of Kosice	65,536	65,537	2	RIPE
Technische Hochschule Koeln	65,536	65,537	2	RIPE
Technische Hochschule Ulm	65,536	65,537	2	RIPE
Universita' degli Studi di Firenze	65,536	65,537	2	RIPE
Universita' degli Studi di Milano	65,536	65,537	2	RIPE
Universita' degli Studi di Palermo	65,536	65,537	2	RIPE
Universita' degli Studi di Parma	65,536	65,537	2	RIPE
Universita' degli Studi di Perugia	65,536	65,537	2	RIPE
Universita' degli Studi di Trieste	65,536	65,537	11	RIPE
Universita' degli Studi di Verona	65,536	65,537	2	RIPE
Universita' di Pisa	65,536	65,537	2	RIPE
Universiti Teknologi Malaysia	65,536	65,537	2	APNIC
University of Jyvaskyla	65,536	65,537	2	RIPE
University of Southampton	65,536	65,537	2	RIPE
VTT Technical Research Centre of Finland Ltd	65,536	65,537	2	RIPE
Wirtschafts- und Sozialwissenschaftliches Rechenzentrum	65,536	65,537	2	RIPE
Hochschule Furtwangen	65,536	2	2	RIPE
Aachen University of Applied Sciences	65,536	-	1	RIPE
ABB AS	65,536	-	1	RIPE
ADSK	65,536	-	1	APNIC
Affiliated Computing Services (Pty) Ltd	65,536	-	1	AFRINIC
African Oxygen Limited	65,536	-	1	AFRINIC
Aftenposten AS	65,536	-	1	RIPE
Agence France-Presse	65,536	-	1	RIPE
Agrihold	65,536	-	1	AFRINIC
Air New Zealand Limited	65,536	-	1	APNIC
Airport Authority Hong Kong	65,536	-	1	APNIC
Airservices Australia	65,536	-	1	APNIC
Albert Schweitzer Ziekenhuis	65,536	-	1	RIPE
Anexia Holding GmbH	65,536	-	1	RIPE
AON UK LIMITED	65,536	-	1	RIPE
APG Groep N.V.	65,536	-	1	RIPE
ArcelorMittal Bremen	65,536	-	1	RIPE
Aston University	65,536	-	1	RIPE
Atos IT Services UK Ltd	65,536	-	1	RIPE
Australian Institute of Marine Science	65,536	-	1	APNIC
AUSTRALIAN SECURITIES & INVESTMENTS COMMISSION (ASIC)	65,536	-	1	APNIC
Austrian Federal Ministry of Women, Science and Research	65,536	-	1	RIPE
Aviva Central Services UK Ltd	65,536	-	1	RIPE
Banque Internationale a Luxembourg SA	65,536	-	1	RIPE
Baring Asset Management Ltd	65,536	-	1	RIPE
Bauhaus-Universitaet Weimar	65,536	-	1	RIPE
Bergens Tidende AS	65,536	-	1	RIPE
Bergische Universitaet Wuppertal	65,536	-	1	RIPE
Berner Kantonalbank AG	65,536	-	1	RIPE
BHP Billiton Innovation Pty Ltd	65,536	-	1	RIPE
Brandenburgische Technische Universitaet Cottbus-Senftenberg	65,536	-	1	RIPE
British Airways plc	65,536	-	1	RIPE