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.

Organisations
89,919
Holding a /22 or any IPv6
46,365
IPv4 space named
52%
Registries covered
3 of 5

OrganisationIPv4 addressesIPv6 /64sBlocksRegistry
Brunel University London65,536-1RIPE
Budapesti Corvinus Egyetem65,536-1RIPE
Bundesamt fuer Seeschiffahrt und Hydrographie65,536-1RIPE
Caisse Des Depots Et Consignations65,536-1RIPE
Cape Provincial Administration65,536-1AFRINIC
Cape Technikon65,536-1AFRINIC
Cargotec Oyj65,536-1RIPE
Carl von Ossietzky Universitaet Oldenburg65,536-1RIPE
Center for Research and Technology Hellas (CERTH)65,536-1RIPE
Centralesupelec EPSCP65,536-1RIPE
Centre hospitalier universitaire vaudois (CHUV)65,536-1RIPE
Centrum Przetwarzania Danych Ministerstwa Finansow65,536-1RIPE
CERFACS SAS65,536-1RIPE
CGI IT UK LIMITED65,536-1RIPE
Chiyoda Corporation65,536-1APNIC
C.I.R.A. (Centro Italiano Ricerche Aerospaziali) S.C.p.A.65,536-1RIPE
Citigroup Inc.65,536-1APNIC
City of Cape Town65,536-1AFRINIC
City of Lahti65,536-2RIPE
City St. George's, University of London65,536-1RIPE
City University of Hong Kong65,536-1APNIC
CLP Power Hong Kong Ltd65,536-1APNIC
CNRS - IRIT65,536-1RIPE
CNRS-LAAS65,536-1RIPE
COGNIZANT OIL AND GAS CONSULTING SERVICES NORWAY AS65,536-1RIPE
Connexion by Boeing Ireland Ltd.65,536-1RIPE
Cosmo Energy Holdings Co.,Ltd.65,536-1APNIC
Croon Elektrotechniek B.V.65,536-1RIPE
Crusoe Technologies LLC65,536-1RIPE
CSIR - Council for Scientific and Industrial Research65,536-1AFRINIC
CSR Limited65,536-1APNIC
Curtin University of Technology65,536-1APNIC
CUSCAL LIMITED65,536-1APNIC
DAICEL Corporation65,536-1APNIC
DAWSON DATA LIMITED65,536-5RIPE
De Montfort University65,536-1RIPE
DEPARTMENT OF JUSTICE AND COMMUNITY SAFETY65,536-1APNIC
Department of Primary Industries and Regional Development65,536-1APNIC
Deutsches Klimarechenzentrum GmbH65,536-1RIPE
Devon County Council65,536-1RIPE
Dimension Data Asia Pacific Pte. Ltd.65,536-1APNIC
Direction des Services de la Navigation Aerienne65,536-1RIPE
DIRECTION GENERALE DES FINANCES PUBLIQUES (DGFIP)65,536-1RIPE
Domstolsverket65,536-1RIPE
Duale Hochschule Baden-Wuerttemberg Ravensburg65,536-1RIPE
Duale Hochschule Baden-Wuerttemberg Stuttgart65,536-1RIPE
Dublin City University65,536-1RIPE
DXC Connect Pty Limited65,536-1APNIC
Ecole Normale Superieure Paris-Saclay EPSCP65,536-1RIPE
Ecole Polytechnique EPSCP65,536-1RIPE
E-Com Cloud Solution Co., Ltd65,536-1AFRINIC
EDGARS STORES LTD.65,536-1AFRINIC
Edinburgh Napier University65,536-1RIPE
ELKEM AS65,536-1RIPE
EPLAN GmbH & Co. KG65,536-1RIPE
Erasmus MC65,536-1RIPE
ERICSSON AUSTRALIA PTY LTD65,536-1APNIC
ESIEE Paris65,536-1RIPE
Eskom Holdings SOC Ltd65,536-1AFRINIC
Etat de Geneve65,536-1RIPE
Ethiopian Educational Research Network (EthERNet)65,536-1AFRINIC
European Southern Observatory65,536-1RIPE
Everllence SE65,536-1RIPE
F5, Inc.65,536-88RIPE
FANUC CORPORATION65,536-1APNIC
Federation University Australia65,536-1APNIC
FernUniversitaet in Hagen65,536-1RIPE
Festo SE & Co. KG65,536-1RIPE
Forschungszentrum Juelich GmbH65,536-1RIPE
Foundation for Research Development65,536-1AFRINIC
Free State Education Department65,536-1AFRINIC
Friedrich Schiller Universitaet Jena65,536-1RIPE
Gemeente Zoetermeer65,536-1RIPE
GE Power UK Unlimited65,536-1RIPE
GFZ Helmholtz-Zentrum fuer Geoforschung65,536-1RIPE
Glaxo Wellcome UK Limited65,536-1RIPE
Goldsmiths University of London65,536-1RIPE
Goodyear South Africa (Pty) Ltd65,536-1AFRINIC
Gottfried Wilhelm Leibniz Universitaet Hannover65,536-1RIPE
Guy's and St Thomas' NHS Foundation Trust65,536-1RIPE
Havenbedrijf Rotterdam n.v.65,536-1RIPE
HB Svenska Dagbladet AB & CO65,536-1RIPE
Hellenic Mediterranean University65,536-1RIPE
Helmholtz-Zentrum Dresden-Rossendorf e.V.65,536-1RIPE
Helmholtz-Zentrum fuer Umweltforschung GmbH - UFZ65,536-1RIPE
Helmholtz-Zentrum hereon GmbH65,536-1RIPE
Helmut-Schmidt-Universitaet/Universitaet der Bundeswehr Hamburg65,536-1RIPE
Heriot-Watt University65,536-2RIPE
HES-SO Fribourg65,536-1RIPE
HES-SO Valais-Wallis65,536-1RIPE
Hitachi Energy Holdings Ltd65,536-1RIPE
Hochschule der Medien Stuttgart65,536-1RIPE
Hochschule fuer angewandte Wissenschaften Hamburg65,536-1RIPE
Hochschule fuer Angewandte Wissenschaften Kiel65,536-1RIPE
Hochschule fuer oeffentliche Verwaltung und Finanzen Ludwigsburg65,536-1RIPE
Hochschule fuer Technik und Wirtschaft Berlin65,536-1RIPE
Hochschule fuer Technik und Wirtschaft Dresden65,536-1RIPE
Hochschule fuer Technik, Wirtschaft und Kultur Leipzig65,536-1RIPE
Hochschule Heilbronn65,536-1RIPE
Hochschule Konstanz Technik, Wirtschaft und Gestaltung65,536-1RIPE
Hochschule Mannheim65,536-1RIPE
Hochschule Merseburg65,536-1RIPE
Hochschule Offenburg65,536-1RIPE
Hochschule Pforzheim - Gestaltung, Technik, Wirtschaft und Recht65,536-1RIPE
Hochschule Ravensburg-Weingarten65,536-1RIPE
Hochschule Reutlingen65,536-1RIPE
Hochschule Zittau/Goerlitz65,536-1RIPE
Hong Kong Baptist University65,536-1APNIC
Human Science Research Council65,536-1AFRINIC
Humboldt-Universitaet zu Berlin65,536-1RIPE
IFP ENERGIES NOUVELLES EPIC65,536-2RIPE
INDEPENDENT NEWSPAPERS (PTY) LTD65,536-1AFRINIC
Industrial Technology Research Institute65,536-1APNIC
Institut de Recherche et Coordination Acoustique/Musique65,536-1RIPE
Institut Mines-Telecom Ecole Nationale Superieure des Mines d'Ales65,536-1RIPE
Instituto de Astrofisica de Canarias65,536-1RIPE
Institut Pasteur65,536-1RIPE
Intel Corporation65,536-1RIPE
International Atomic Energy Agency65,536-1RIPE
Istituto Nazionale della Previdenza Sociale65,536-1RIPE
Iveco SpA65,536-1RIPE
Jade Hochschule Wilhelmshaven / Oldenburg / Elsfleth65,536-1RIPE
Johannesburg City Council65,536-1AFRINIC
Johann Heinrich von Thuenen-Institut (vTI)65,536-1RIPE
Justus-Liebig-Universitaet Giessen65,536-1RIPE
Kanton Zurich65,536-1RIPE
Kapsch AG65,536-1RIPE
King Mongkut's Institute of Technology Ladkrabang65,536-1APNIC
King's College London65,536-1RIPE
Klinikum der Friedrich-Alexander-Universitaet Erlangen-Nuernberg65,536-1RIPE
Knorr-Bremse AG65,536-1RIPE
Koerber Technologies GmbH65,536-1RIPE
Koninklijke Luchtvaart Maatschappij N.V.65,536-1RIPE
KPMG Staffing & Facility Services B.V.65,536-1RIPE
Kuwait Institute for Scientific Research65,536-1RIPE
KUWAIT UNIVERSITY65,536-1RIPE
Landspitali - University Hospital (LUH)65,536-1RIPE
Leeds Beckett University65,536-1RIPE
Leibniz-Institut fuer Astrophysik Potsdam (AIP)65,536-1RIPE
Liberty Group Limited65,536-1AFRINIC
Liffe Administration And Management65,536-1RIPE
Liverpool John Moores University65,536-1RIPE
LNRS Data Services Limited65,536-1RIPE
London Metropolitan University65,536-1RIPE
Main Roads Western Australia65,536-1APNIC
Manufacture Francaise des Pneumatiques Michelin SCA65,536-1RIPE
Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.65,536-1RIPE
Maynooth University65,536-1RIPE
Mediaprint Zeitungs- und Zeitschrifftenverlag Ges.m.b.H. & Co KG65,536-1RIPE
Medisch Spectrum Twente65,536-1RIPE
Mega Plastics (Pty) Ltd65,536-1AFRINIC
Meteo-France EPA65,536-1RIPE
Meteorologisk Institutt65,536-1RIPE
Metro AG65,536-1RIPE
Metsaliitto Osuuskunta65,536-1RIPE
Migros Bank AG65,536-1RIPE
Ministere de la Culture65,536-1RIPE
MINISTERE DE LA SANTE ET DES AFFAIRES SOCIALES65,536-1RIPE
Ministerium der Finanzen Sachsen-Anhalt65,536-1RIPE
Ministerstwo Rozwoju i Technologii65,536-1RIPE
Ministry of Public Health, Thailand65,536-1APNIC
MOL Nyrt.65,536-1RIPE
MUFG Securities EMEA PLC65,536-1RIPE
Munster Technological University65,536-1RIPE
Murdoch University65,536-1APNIC
Museum Victoria65,536-1APNIC
Naetkraft Boraas Infra AB65,536-1RIPE
Naspers65,536-1AFRINIC
National Center of Scientific Research DEMOKRITOS65,536-1RIPE
National Technical University of Athens65,536-1RIPE
NATO-HQ65,536-1RIPE
Natural History Museum65,536-1RIPE
NetO Corp65,536-1RIPE
Network Research Corporation Japan Ltd65,536-1APNIC
NEWS CORP UK & IRELAND LIMITED65,536-1RIPE
News Digital Media Pty Limited65,536-1APNIC
New South Wales Police65,536-1APNIC
New Zealand Steel Limited65,536-1APNIC
Nissan S.A. (Pty) Ltd65,536-1AFRINIC
Noordelijke Hogeschool Leeuwarden65,536-1RIPE
Norsk Hydro ASA65,536-1RIPE
Norsk Regnesentral STI65,536-1RIPE
Nortura SA65,536-1RIPE
Nottingham Trent University65,536-1RIPE
NPL Management LTD65,536-1RIPE
Observatoire de Paris65,536-1RIPE
Office of Environment and Heritage65,536-1APNIC
OFS Roads Department (Provincial Administration)65,536-1AFRINIC
Old Mutual65,536-1AFRINIC
OP Osuuskunta65,536-1RIPE
Orica Australia Pty Ltd65,536-1APNIC
Ostfalia Hochschule fuer angewandte Wissenschaften65,536-1RIPE
Ostfold Fylkeskommune65,536-1RIPE
OVERSEA-CHINESE BANKING CORPORATION LIMITED65,536-1APNIC
Oxford Brookes University65,536-1RIPE
Oy L M Ericsson Ab65,536-1RIPE
Philipps-Universitaet Marburg65,536-1RIPE
Politehnica University of Bucharest65,536-1RIPE
Puolustusvoimat65,536-1RIPE
Qianyun International Technology Co., Limited65,536-1RIPE
Queensland Health65,536-1APNIC
Queensland Police Service65,536-1APNIC
RAYIP NETWORKS - FZCO65,536-12RIPE
Rhein Papier GmbH65,536-1RIPE
Rijksinstituut voor Volksgezondheid en Milieuhygiene65,536-1RIPE
Rijksuniversiteit Groningen65,536-1RIPE
Royal Automobile Club of Victoria Ltd65,536-1APNIC
Safran Helicopter Engines SASU65,536-1RIPE
Safren Computer Services65,536-1AFRINIC
Salomon S.A.S.65,536-1RIPE
Sappi Europe S.A.65,536-1RIPE
Sarawak Shell Berhad65,536-1APNIC
Scuola Internazionale Superiore di Studi Avanzati (SISSA) Di Trieste65,536-1RIPE
Sentrachem Limited65,536-1AFRINIC
Servei Catala de la Salut65,536-1RIPE
Service Public de Wallonie65,536-1RIPE
Shell S. A. (Pty) Ltd.65,536-1AFRINIC
Skanska Sverige AB65,536-4RIPE
Slovak Academy of Sciences65,536-1RIPE
South African Broadcasting Corporation65,536-1AFRINIC
South East Technological University65,536-1RIPE
Standard Chartered Bank (Hong Kong) Ltd.65,536-1APNIC
Stavanger Aftenblad AS65,536-1RIPE
Stichting Deltares65,536-1RIPE
Stiftelsen Handelshoyskolen BI65,536-1RIPE
Stiftung Universitaet Hildesheim65,536-1RIPE
STMicroelectronics France SAS65,536-1RIPE
STMICROELECTRONICS LIMITED65,536-1RIPE
STMICROELECTRONICS S.R.L.65,536-1RIPE
Swiss International Air Lines AG65,536-1RIPE
Sydney Water Corporation65,536-1APNIC
Tanaka Ikueikai Educational foundation65,536-1APNIC
Tata Steel IJmuiden B.V.65,536-1RIPE
Technical University of Crete65,536-1RIPE
Technische Hochschule Augsburg65,536-1RIPE
Technische Universitaet Bergakademie Freiberg65,536-1RIPE
Technische Universitaet Carolo-Wilhelmina zu Braunschweig65,536-1RIPE
Technische Universitaet Hamburg65,536-1RIPE
Technische Universitaet Ilmenau65,536-1RIPE
Teesside University65,536-1RIPE
Telecom Castilla La Mancha SA65,536-1RIPE
Telemark Fylkeskommune65,536-1RIPE
The Atomic Energy Board65,536-1AFRINIC
The Council Of The Queensland Institute Of Medical Research65,536-1APNIC
The Dublin Institute for Advanced Studies65,536-1RIPE
The Hong Kong Polytechnic University65,536-1APNIC
The Israel Electric Corporation Limited65,536-1RIPE
The Leeds Teaching Hospitals National HealthService Trust65,536-1RIPE
The Swatch Group Services AG65,536-1RIPE
The University of Strathclyde65,536-1RIPE