Longest Match / Organisations

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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.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

Organisation	IPv4 addresses	IPv6 /64s	Blocks	Registry
University of the Witwatersrand	65,792	-	2	AFRINIC
Vrije Universiteit Brussel - Universite Libre de Bruxelles	65,792	-	2	RIPE
World Health Organization (WHO)	65,792	-	2	RIPE
WU (Wirtschaftsuniversitaet Wien) - Vienna University of Economics and Business	65,792	-	2	RIPE
Svenskt Naringsliv Service AB	65,768	-	24	RIPE
Universitaet Bielefeld	65,728	-	2	RIPE
Univerzita obrany	65,672	-	3	RIPE
tal.de GmbH	65,664	34,359,738,368	23	RIPE
Comenius University in Bratislava	65,664	65,536	3	RIPE
LEGO System A/S	65,640	34,359,738,368	5	RIPE
Universitaet Kassel	65,600	262,144	6	RIPE
Neste Oyj	65,600	-	9	RIPE
Otto-Friedrich-Universitaet Bamberg	65,600	-	2	RIPE
Hochschule Darmstadt	65,568	196,624	7	RIPE
Bruker Group Services SE	65,568	-	3	RIPE
Sjofartsverket	65,552	65,536	5	RIPE
Universitaet Salzburg	65,552	65,536	3	RIPE
Universitaet Passau	65,552	-	2	RIPE
Valmet Automotive Oy	65,552	-	2	RIPE
Statens Fastighetsverk	65,548	65,536	4	RIPE
Technische Hochschule Nuernberg Georg Simon Ohm	65,544	-	2	RIPE
University of South Bohemia in Ceske Budejovice	65,542	65,537	5	RIPE
Universidade Catolica Portuguesa	65,537	1	3	RIPE
DataWeb Global Group B.V.	65,536	68,702,699,520	61	RIPE
Vrije Universiteit Brussel	65,536	34,359,803,904	3	RIPE
Budapest University of Technology and Economics	65,536	34,359,738,368	5	RIPE
European Patent Organisation	65,536	34,359,738,368	2	RIPE
Fraport AG Frankfurt Airport Services Worldwide	65,536	34,359,738,368	2	RIPE
GSI Helmholtzzentrum fur Schwerionenforschung GmbH	65,536	34,359,738,368	2	RIPE
Joint Institute for Nuclear Research	65,536	34,359,738,368	2	RIPE
Linde GmbH	65,536	34,359,738,368	2	RIPE
London Borough of Newham	65,536	34,359,738,368	2	RIPE
MAN Truck & Bus SE	65,536	34,359,738,368	2	RIPE
Pricewaterhousecoopers Services Limited	65,536	34,359,738,368	2	RIPE
Runware Ltd	65,536	34,359,738,368	6	RIPE
RWE Supply & Trading GMBH	65,536	34,359,738,368	2	RIPE
Swiss Armed Forces - AFCSO	65,536	34,359,738,368	2	RIPE
UK Health Security Agency	65,536	34,359,738,368	2	RIPE
Universitaet Bremen	65,536	34,359,738,368	2	RIPE
VSE NET GmbH	65,536	34,359,738,368	29	RIPE
Westdeutscher Rundfunk Koln	65,536	34,359,738,368	2	RIPE
Ministerie van Justitie en Veiligheid	65,536	17,179,869,184	3	RIPE
Global Transit Communications	65,536	8,589,934,592	9	APNIC
IT-Dienstleistungszentrum Berlin	65,536	8,589,934,592	3	RIPE
The University of the South Pacific	65,536	4,295,032,832	3	APNIC
Algerie Telecom Mobile MOBILIS	65,536	4,294,967,296	2	AFRINIC
Amadeus Data Processing GmbH	65,536	4,294,967,296	2	APNIC
Auckland University of Technology	65,536	4,294,967,296	2	APNIC
Ausgrid	65,536	4,294,967,296	2	APNIC
Australian Bureau of Statistics	65,536	4,294,967,296	2	APNIC
Azercell Telecom Ltd	65,536	4,294,967,296	3	RIPE
Botswana Telecommunications Corporation	65,536	4,294,967,296	2	AFRINIC
BRACNet Limited	65,536	4,294,967,296	5	APNIC
Bulgarian Research and Education Network Association (BREN)	65,536	4,294,967,296	2	RIPE
CANAL + TELECOM	65,536	4,294,967,296	6	AFRINIC
COMCARE	65,536	4,294,967,296	2	APNIC
Comunidad Autonoma de la Region de Murcia	65,536	4,294,967,296	2	RIPE
Department of Agriculture, Fisheries and Forestry	65,536	4,294,967,296	2	APNIC
Department of Energy and Public Works	65,536	4,294,967,296	2	APNIC
Energex Limited	65,536	4,294,967,296	2	APNIC
European Parliament	65,536	4,294,967,296	2	RIPE
Flinders University	65,536	4,294,967,296	2	APNIC
Forewin Telecom Group Limited	65,536	4,294,967,296	10	APNIC
Fredrikstad kommune	65,536	4,294,967,296	2	RIPE
Generali Deutschland AG	65,536	4,294,967,296	2	RIPE
GENERAL MOTORS OVERSEAS DISTRIBUTION LLC	65,536	4,294,967,296	2	APNIC
Great Barrier Reef Marine Park Authority	65,536	4,294,967,296	2	APNIC
Infosys Limited	65,536	4,294,967,296	2	APNIC
Inland Revenue Department	65,536	4,294,967,296	2	APNIC
InnovaPuglia SpA	65,536	4,294,967,296	2	RIPE
Intelsat	65,536	4,294,967,296	2	AFRINIC
Jade Software Corporation Limited	65,536	4,294,967,296	2	APNIC
Kanar Telecommunication (Canar Telecom Co.Ltd)	65,536	4,294,967,296	6	AFRINIC
Land Information New Zealand	65,536	4,294,967,296	2	APNIC
La Trobe University	65,536	4,294,967,296	2	APNIC
manroland IP GmbH	65,536	4,294,967,296	2	RIPE
Massey University	65,536	4,294,967,296	2	APNIC
Mozambique Research & Education Network - MoRENet	65,536	4,294,967,296	2	AFRINIC
Nanyang Technological University	65,536	4,294,967,296	2	APNIC
NATCOM Development and Investment Limited	65,536	4,294,967,296	2	AFRINIC
National Informatics Centre	65,536	4,294,967,296	2	APNIC
National University of Singapore	65,536	4,294,967,296	2	APNIC
Ngee Ann Polytechnic	65,536	4,294,967,296	2	APNIC
NISZ National Infocommunications Service Provider Private Limited	65,536	4,294,967,296	3	RIPE
operational services GmbH & Co. KG	65,536	4,294,967,296	2	RIPE
Parlamentsdirektion	65,536	4,294,967,296	2	RIPE
Samart Infonet Co., Ltd.	65,536	4,294,967,296	3	APNIC
Schneider Electric Industries SAS	65,536	4,294,967,296	2	RIPE
Singapore Polytechnic	65,536	4,294,967,296	2	APNIC
Sociale Verzekeringsbank ZBO	65,536	4,294,967,296	2	RIPE
STATENS KARTVERK	65,536	4,294,967,296	2	RIPE
Stichting Nederlandse Publieke Omroep	65,536	4,294,967,296	2	RIPE
S.W.I.F.T. SC	65,536	4,294,967,296	2	RIPE
Temasek Polytechnic	65,536	4,294,967,296	2	APNIC
UAB "Balticum TV"	65,536	4,294,967,296	2	RIPE
Uganda Telecom Ltd	65,536	4,294,967,296	2	AFRINIC
Universidad de Navarra	65,536	4,294,967,296	2	RIPE
Universitatsspital Zurich (USZG)	65,536	4,294,967,296	2	RIPE
University of Canberra	65,536	4,294,967,296	2	APNIC
University of Macau	65,536	4,294,967,296	2	APNIC
Woodside Energy Limited	65,536	4,294,967,296	2	APNIC
Universitaet Ulm	65,536	17,891,328	4	RIPE
Deutscher Wetterdienst	65,536	16,842,752	3	RIPE
Universitaet Konstanz	65,536	16,842,752	3	RIPE
Hochschule Luzern	65,536	16,777,216	2	RIPE
University of Nigeria	65,536	1,048,576	2	AFRINIC
Gemeente Delft	65,536	262,144	3	RIPE
Uitvoeringsinstituut Werknemersverzekeringen	65,536	262,144	4	RIPE
Arbeids- og velferdsetaten	65,536	196,608	4	RIPE
Zapadoceska univerzita v Plzni	65,536	131,074	5	RIPE
Auswaertiges Amt	65,536	131,072	3	RIPE
Hochschule Aalen	65,536	131,072	3	RIPE
Technicka univerzita v Liberci	65,536	65,537	3	RIPE
Vysoka skola chemicko-technologicka v Praze	65,536	65,537	3	RIPE
ABSA (Amalgamated Banks of South Africa)	65,536	65,536	2	AFRINIC
Agfa Gevaert NV	65,536	65,536	2	RIPE
Aklagarmyndigheten	65,536	65,536	2	RIPE
ASSA ABLOY AB	65,536	65,536	2	RIPE
Australian Nuclear Science and Technology Organisation	65,536	65,536	2	APNIC
Bank Of Finland	65,536	65,536	2	RIPE
Bundesamt fuer Meteorologie und Klimatologie MeteoSchweiz	65,536	65,536	2	RIPE
Capgemini Finland Oy	65,536	65,536	2	RIPE
Cooperatie AVEBE U.A.	65,536	65,536	2	RIPE
CRS4 Srl	65,536	65,536	2	RIPE
Departementenes sikkerhets- og serviceorganisasjon (DSS)	65,536	65,536	2	RIPE
Dienst voor het Kadaster en de openbare registers	65,536	65,536	2	RIPE
Eawag/Empa	65,536	65,536	2	RIPE
FIZ Karlsruhe - Leibniz-Institut fuer Informationsinfrastruktur GmbH	65,536	65,536	2	RIPE
Goteborgs universitet	65,536	65,536	2	RIPE
Government ICT Authority - Israel	65,536	65,536	2	RIPE
Graubuendner Kantonalbank	65,536	65,536	2	RIPE
Helsingin kaupunki	65,536	65,536	2	RIPE
Hochschule Albstadt-Sigmaringen	65,536	65,536	2	RIPE
IHK Gesellschaft fuer Informationsverarbeitung mbH	65,536	65,536	2	RIPE
Joanneum Research Forschungsgesellschaft mbH	65,536	65,536	2	RIPE
Kriminalvardsstyrelsen	65,536	65,536	2	RIPE
Kristiansand Kommune	65,536	65,536	2	RIPE
Linkopings Kommun, LKDATA	65,536	65,536	2	RIPE
Lulea Tekniska Universitet	65,536	65,536	2	RIPE
Max-Delbrueck-Centrum fuer Molekulare Medizin in der Helmholtz-Gemeinschaft	65,536	65,536	2	RIPE
Medizinische Universitaet Wien	65,536	65,536	2	RIPE
Oesterreichische Kontrollbank Aktiengesellschaft	65,536	65,536	2	RIPE
Petroliam Nasional Berhad	65,536	65,536	2	APNIC
Region Ostergotland	65,536	65,536	2	RIPE
SCES COMMUNS IMT BUSINESS SCHOOL TELECOM SUD PARIS	65,536	65,536	2	RIPE
Skien Kommune	65,536	65,536	2	RIPE
Steiermaerkische Krankenanstaltengesellschaft mbH	65,536	65,536	2	RIPE
Technical University of Kosice	65,536	65,536	2	RIPE
Technische Hochschule Koeln	65,536	65,536	2	RIPE
Technische Hochschule Ulm	65,536	65,536	2	RIPE
Universita' degli Studi di Milano	65,536	65,536	2	RIPE
Universita' degli Studi di Parma	65,536	65,536	2	RIPE
Universita' degli Studi di Verona	65,536	65,536	2	RIPE
Universita' di Pisa	65,536	65,536	2	RIPE
Universiti Teknologi Malaysia	65,536	65,536	2	APNIC
University of Jyvaskyla	65,536	65,536	2	RIPE
University of Southampton	65,536	65,536	2	RIPE
VTT Technical Research Centre of Finland Ltd	65,536	65,536	2	RIPE
Wirtschafts- und Sozialwissenschaftliches Rechenzentrum	65,536	65,536	2	RIPE
Hochschule Furtwangen	65,536	1	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
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
Bank J. Safra Sarasin AG	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
Brunel University London	65,536	-	1	RIPE
Budapesti Corvinus Egyetem	65,536	-	1	RIPE
Bundesamt fuer Seeschiffahrt und Hydrographie	65,536	-	1	RIPE
Caisse Des Depots Et Consignations	65,536	-	1	RIPE
Cape Provincial Administration	65,536	-	1	AFRINIC
Cape Technikon	65,536	-	1	AFRINIC
Cargotec Oyj	65,536	-	1	RIPE
Carl von Ossietzky Universitaet Oldenburg	65,536	-	1	RIPE
Center for Research and Technology Hellas (CERTH)	65,536	-	1	RIPE
Centralesupelec EPSCP	65,536	-	1	RIPE
Centre hospitalier universitaire vaudois (CHUV)	65,536	-	1	RIPE
Centrum Przetwarzania Danych Ministerstwa Finansow	65,536	-	1	RIPE
CERFACS SAS	65,536	-	1	RIPE
CGI IT UK LIMITED	65,536	-	1	RIPE
Chiyoda Corporation	65,536	-	1	APNIC
C.I.R.A. (Centro Italiano Ricerche Aerospaziali) S.C.p.A.	65,536	-	1	RIPE
Citigroup Inc.	65,536	-	1	APNIC
City of Cape Town	65,536	-	1	AFRINIC
City of Lahti	65,536	-	2	RIPE
City St. George's, University of London	65,536	-	1	RIPE
City University of Hong Kong	65,536	-	1	APNIC
CLP Power Hong Kong Ltd	65,536	-	1	APNIC
CNRS - IRIT	65,536	-	1	RIPE
CNRS-LAAS	65,536	-	1	RIPE
COGNIZANT OIL AND GAS CONSULTING SERVICES NORWAY AS	65,536	-	1	RIPE
Connexion by Boeing Ireland Ltd.	65,536	-	1	RIPE
Consejo Superior de Investigaciones Cientificas (CSIC)	65,536	-	1	RIPE
Cosmo Energy Holdings Co.,Ltd.	65,536	-	1	APNIC
Credit Agricole Corporate and Investment Bank SA	65,536	-	1	RIPE
Croonwolter&dros B.V.	65,536	-	1	RIPE
Crusoe Technologies LLC	65,536	-	1	RIPE
CSIR - Council for Scientific and Industrial Research	65,536	-	1	AFRINIC
CSR Limited	65,536	-	1	APNIC
Curtin University of Technology	65,536	-	1	APNIC
CUSCAL LIMITED	65,536	-	1	APNIC
DAICEL Corporation	65,536	-	1	APNIC
De Montfort University	65,536	-	1	RIPE
Department for Science, Innovation and Technology of the United Kingdom of Great Britain and Northern Ireland	65,536	-	1	RIPE
DEPARTMENT OF JUSTICE AND COMMUNITY SAFETY	65,536	-	1	APNIC
Department of Primary Industries and Regional Development	65,536	-	1	APNIC
Deutsches Klimarechenzentrum GmbH	65,536	-	1	RIPE
Devon County Council	65,536	-	1	RIPE
Dimension Data Asia Pacific Pte. Ltd.	65,536	-	1	APNIC
DIRECTION GENERALE DES FINANCES PUBLIQUES (DGFIP)	65,536	-	1	RIPE
Domstolsverket	65,536	-	1	RIPE
Duale Hochschule Baden-Wuerttemberg Ravensburg	65,536	-	1	RIPE
Duale Hochschule Baden-Wuerttemberg Stuttgart	65,536	-	1	RIPE
Dublin City University	65,536	-	1	RIPE
DXC Connect Pty Limited	65,536	-	1	APNIC
Ecole Normale Superieure Paris-Saclay EPSCP	65,536	-	1	RIPE
Ecole Polytechnique EPSCP	65,536	-	1	RIPE
E-Com Cloud Solution Co., Ltd	65,536	-	1	AFRINIC
EDGARS STORES LTD.	65,536	-	1	AFRINIC
Edinburgh Napier University	65,536	-	1	RIPE
ELKEM AS	65,536	-	1	RIPE
EPLAN GmbH & Co. KG	65,536	-	1	RIPE
Erasmus MC	65,536	-	1	RIPE
ERICSSON AUSTRALIA PTY LTD	65,536	-	1	APNIC
ESIEE Paris	65,536	-	1	RIPE
Eskom Holdings SOC Ltd	65,536	-	1	AFRINIC