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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.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
Globaldata Investments INC	132,096	4,294,967,296	5	APNIC
OGERO	132,096	4,294,967,296	5	RIPE
Transport for NSW	132,096	4,294,967,296	4	APNIC
TATA CONSULTANCY SERVICES LIMITED	132,096	-	3	APNIC
BELNET	132,064	34,358,689,792	7	RIPE
Consorci de Serveis Universitaris de Catalunya	131,840	4,295,098,368	7	RIPE
Bond University Limited	131,840	65,536	5	APNIC
Universitaet Heidelberg	131,840	65,536	5	RIPE
Tel Aviv University	131,840	-	4	RIPE
Technische Universitaet Dresden	131,584	70,598,590,464	10	RIPE
Australian Broadcasting Corporation	131,584	-	4	APNIC
TNO	131,584	-	4	RIPE
Societe nationale SNCF SA	131,328	34,359,738,368	4	RIPE
MTC - Mobile Telecommunications, Ltd.	131,328	4,294,967,296	6	AFRINIC
Equinor ASA	131,328	65,536	4	RIPE
Deutsches Elektronen-Synchrotron DESY	131,328	-	3	RIPE
F. Hoffmann-La Roche AG	131,328	-	3	RIPE
Kassenaerztliche Bundesvereinigung	131,328	-	2	RIPE
Nedbank Limited	131,328	-	3	AFRINIC
NORTHERN TERRITORY OF AUSTRALIA	131,328	-	3	APNIC
TKMS GmbH	131,328	-	3	RIPE
dogado GmbH	131,263	274,877,841,407	93	RIPE
EDEKA Verwaltungs- und Beteiligungs GmbH	131,072	34,359,738,368	2	RIPE
NATIONWIDE BUILDING SOCIETY	131,072	34,359,738,368	3	RIPE
Skatteetaten ORGL	131,072	34,359,738,368	3	RIPE
IBM Cloud International B.V.	131,072	17,179,869,184	13	APNIC
Department of Climate Change Energy the Environment and Water	131,072	8,589,934,592	4	APNIC
Scania CV AB	131,072	8,589,934,592	3	RIPE
Axxess DSL (PTY) Ltd	131,072	4,294,967,296	3	AFRINIC
Bureau of Meteorology	131,072	4,294,967,296	3	APNIC
Deakin University	131,072	4,294,967,296	3	APNIC
Sudatel (Sudan Telecom Co. Ltd)	131,072	4,294,967,296	7	AFRINIC
Swedish Tax Agency	131,072	4,294,967,296	3	RIPE
AB Sandvik	131,072	-	2	RIPE
AECI Information Services (Pty) Ltd	131,072	-	1	AFRINIC
Akershus Fylkeskommune	131,072	-	2	RIPE
Alfred-Wegener-Institut Helmholtz-Zentrum fuer Polar- und Meeresforschung	131,072	-	2	RIPE
ArcelorMittal South Africa Ltd	131,072	-	2	AFRINIC
ASSISTANCE PUBLIQUE HOPITAUX DE PARIS	131,072	-	1	RIPE
Bar Ilan University	131,072	-	1	RIPE
Ben Gurion University	131,072	-	1	RIPE
ComX Networks A/S	131,072	-	3	RIPE
DXC Technology Danmark A/S	131,072	-	2	RIPE
Endeavour Energy	131,072	-	2	APNIC
ENEL S.p.A	131,072	-	2	RIPE
Erasmus Universiteit Rotterdam	131,072	-	2	RIPE
Etat de Fribourg	131,072	-	2	RIPE
Haifa University	131,072	-	1	RIPE
Hogeschool van Amsterdam	131,072	-	2	RIPE
Istanbul Teknik Universitesi	131,072	-	2	RIPE
Loughborough University	131,072	-	2	RIPE
Microsoft (S.A.) (Proprietary) Limited	131,072	-	2	AFRINIC
Middle East Technical University	131,072	-	2	RIPE
Movitel, SA	131,072	-	1	AFRINIC
Ost Ostschweizer Fachochschule	131,072	-	2	RIPE
QANTAS Airways Limited	131,072	-	2	APNIC
Royal DSM NV	131,072	-	2	RIPE
Royal Melbourne Institute of Technology (RMIT University)	131,072	-	2	APNIC
Sasol South Africa (PTY) LTD	131,072	-	2	AFRINIC
Technische Universitaet Berlin	131,072	-	2	RIPE
Technische Universiteit Delft	131,072	-	2	RIPE
THE DEPARTMENT OF THE PRIME MINISTER AND CABINET	131,072	-	2	APNIC
Universidad Politecnica de Madrid	131,072	-	2	RIPE
Universitaet Duisburg-Essen	131,072	-	2	RIPE
Universitaet Wuerzburg	131,072	-	2	RIPE
UNIVERSITE COTE D'AZUR	131,072	-	2	RIPE
Universiteit van Amsterdam	131,072	-	2	RIPE
University of Aberdeen	131,072	-	2	RIPE
NET AND GRID RESEARCH, LLC	130,048	-	8	RIPE
ONITELECOM - INFOCOMUNICACOES, S.A.	129,904	34,359,738,368	7	RIPE
ORANGE MOLDOVA S.A.	129,792	4,294,967,296	15	RIPE
Andrews & Arnold Ltd	128,512	34,359,738,368	10	RIPE
Prager Connect GmbH	128,437	480,958,939,136	602	RIPE
OVH Ltd	128,041	2,456,065	1,522	RIPE
Euronet Communications B.V.	128,000	42,949,672,960	8	RIPE
IP Master Group LLC FZ	127,840	-	3	RIPE
MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KG	127,744	8,589,934,592	14	RIPE
Zenlayer Inc	127,488	34,359,738,368	16	RIPE
GOLD IP L.L.C-FZ	127,488	4,294,639,616	7	RIPE
Limited Liability Company "KYIVSKI TELEKOMUNIKATSIYNI MEREZHI"	127,232	8,589,934,592	13	RIPE
"Domain names registrar REG.RU", Ltd	126,976	17,179,869,184	187	RIPE
Primeworld Digital Systems, Inc.	126,976	4,294,967,296	8	APNIC
"Telekomunikacije Republike Srpske" akcionarsko drustvo Banja Luka	125,952	38,654,705,664	13	RIPE
Eviny Fiber AS	125,184	68,719,542,272	13	RIPE
Crnogorski Telekom a.d.Podgorica	124,928	34,359,738,368	14	RIPE
Telecommunication Company of Esfahan	124,215	-	385	RIPE
BEYON B.S.C.	123,904	34,359,738,368	9	RIPE
GTT Communications France SAS	123,136	4,294,967,296	8	RIPE
UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	122,880	8,590,065,664	24	APNIC
ORANGE BUSINESS SERVICES U.S. Inc.	122,880	-	6	RIPE
netplus.ch SA	122,624	42,949,672,960	29	RIPE
Dstny BE N.V.	122,432	201,863,462,912	76	RIPE
Enreach Netherlands B.V.	122,360	249,108,103,168	60	RIPE
AFNIC (Association Francaise pour le Nommage Internet en Cooperation)	122,112	458,752	23	RIPE
Orion Telekom Tim d.o.o.Beograd	121,600	4,294,967,296	39	RIPE
RSAWEB (PTY) LTD	121,344	68,719,476,736	23	AFRINIC
Yahoo Japan	120,832	4,295,032,832	8	APNIC
JSC "Severen-Telecom"	120,303	51,539,345,408	134	RIPE
Flex Ltd.	119,808	34,359,738,368	22	RIPE
NETPLUZ HOLDINGS PRIVATE LIMITED	118,528	4,294,967,296	20	APNIC
JSC "ER-Telecom Holding" Nizhny Novgorod	118,016	67,109,120	29	RIPE
NordNet SA	117,760	68,719,476,736	33	RIPE
Nepal Telecommunications Corporation	116,736	4,294,967,296	7	APNIC
OVH Telecom	116,480	68,157,440	21	RIPE
JSC "ER-Telecom Holding" Yekaterinburg Branch	116,480	67,108,864	82	RIPE
Bunny Communications LLC	116,224	-	425	RIPE
The Constant Company, LLC.	115,744	38,587,596,800	21	RIPE
CANCOM Managed Services GmbH	115,712	38,654,705,664	11	RIPE
Itility Limited	115,712	34,359,738,368	12	RIPE
ImproWare AG	115,712	4,294,967,296	6	RIPE
Vienna University	115,264	8,589,934,592	33	RIPE
CD-Telematika a.s.	115,200	4,294,967,296	43	RIPE
University of Cape Town	115,200	524,288	7	AFRINIC
Equinix (Finland) Oy	114,944	8,590,000,128	13	RIPE
SES ASTRA S.A.	114,936	73,014,444,032	14	RIPE
Claranet Gmbh	114,688	4,294,967,296	11	RIPE
Ministry of Education - EMISC	114,688	4,294,967,296	5	APNIC
Research and Education Network for Uganda	114,688	4,294,967,296	4	AFRINIC
Sudanese Research and Education Network	114,688	4,294,967,296	4	AFRINIC
Christchurch City Council	114,688	-	3	APNIC
CEZNET s.r.o.	114,592	231,961,985,024	48	RIPE
Fundacao para a Ciencia e a Tecnologia, I.P.	114,545	30,059,659,162	39	RIPE
Glesys AB	114,048	115,964,116,992	55	RIPE
Anexia Cloud Solutions GmbH	113,904	51,538,755,585	38	RIPE
Iver Sverige AB	113,704	150,323,789,824	53	RIPE
UNYC SAS	112,896	171,798,691,840	51	RIPE
DATACOM SYSTEMS (AU) PTY LTD	112,896	8,589,934,592	10	APNIC
SIA Maklaut	112,384	103,079,215,104	40	RIPE
TNG Stadtnetz GmbH	111,872	103,079,215,104	17	RIPE
TENET Scientific Production Enterprise LLC	111,872	34,359,738,368	31	RIPE
"BeST" CJSC	111,616	34,359,738,368	8	RIPE
Outremer Telecom SAS	111,616	4,294,967,296	10	RIPE
Mada Al-Arab General Services Company	111,104	38,654,705,664	42	RIPE
Macquarie Technology Operations Pty Limited	110,848	8,589,934,592	18	APNIC
Australian Private Networks Pty Ltd	110,592	4,294,967,296	7	APNIC
Computer Technology Institute and Press "Diophantus"	110,592	-	3	RIPE
Vorboss Limited	110,552	103,079,215,104	53	RIPE
CSC - Tieteen tietotekniikan keskus Oy	109,328	4,291,297,280	6	RIPE
MYNET S.R.L.	109,312	206,158,430,208	64	RIPE
Verizon Switzerland AG	109,056	68,719,476,736	10	RIPE
WWZ Telekom AG	108,544	68,719,476,736	11	RIPE
Mercury NZ Limited	108,544	8,590,000,128	30	APNIC
Fujitsu Services Ltd.	108,064	4,294,967,296	8	RIPE
SpaceNet AG	107,448	8,590,000,128	11	RIPE
Canal + Telecom SAS	107,000	34,359,738,368	8	RIPE
Gigaclear Limited	106,496	73,014,444,032	32	RIPE
Magnet Networks Limited	106,496	34,359,738,368	16	RIPE
RADIOKOMUNIKACE a.s.	106,496	34,359,738,368	5	RIPE
Six Degrees Technology Group Limited	106,304	137,439,019,008	47	RIPE
JSC "ER-Telecom Holding" Samara Branch	105,984	-	49	RIPE
Digit One LLC	105,472	4,294,967,296	23	RIPE
Millenicom Telekomunikasyon Hizmetleri Anonim Sirketi	105,472	4,294,967,296	7	RIPE
NTTCINS	105,472	4,294,967,296	12	APNIC
Universitetet i Oslo	105,472	16,777,216	6	RIPE
Init7 (Switzerland) Ltd.	105,200	73,914,581,000	3,192	RIPE
Federal State Budgetary Educational Institution of Higher Education Lomonosov Moscow State University	104,960	38,654,705,664	8	RIPE
Orient Express LDI (Private) Limited	104,960	4,294,967,296	29	APNIC
Federal Institute of Technology Zurich (ETHZ)	104,448	196,608	8	RIPE
Hostopia Australia Web Pty Ltd	103,936	21,474,836,480	42	APNIC
JasTel Network Company Limited	103,936	8,589,934,592	31	APNIC
MIFFLIN COUNTY WIRELESS LLC	103,936	-	34	RIPE
Viva Armenia CJSC	103,680	8,589,934,592	15	RIPE
CINECA CONSORZIO INTERUNIVERSITARIO	103,368	34,359,869,440	16	RIPE
Voyager Internet Ltd.	103,168	34,359,738,368	33	APNIC
xilo Ltd.	102,752	25,769,869,312	16	RIPE
SOFTNET d.o.o.	102,400	343,597,383,680	34	RIPE
Volkswagen AG	102,400	34,359,738,368	4	RIPE
Broadband Systems Corporation	102,400	4,294,967,296	8	AFRINIC
Routit BV	102,400	4,294,967,296	9	RIPE
Tarr Kft.	102,144	4,294,967,296	60	RIPE
Petersburg Internet Network ltd.	101,888	150,322,806,782	97	RIPE
United Information Highway Co.,Ltd.	101,888	12,884,967,424	57	APNIC
Element IP Management Services LLC	101,888	-	257	RIPE
ALFA TELECOM s.r.o.	101,632	-	12	RIPE
Atos Information Technology GmbH	101,376	8,589,803,520	16	RIPE
TV CABO ANGOLA LDA	101,376	4,294,967,296	52	AFRINIC
Symbio Networks Pty Ltd	101,120	4,294,967,296	13	APNIC
King Abdul Aziz City for Science and Technology	100,864	34,359,803,904	9	RIPE
University of London	100,608	-	4	RIPE
RapidSeedbox Ltd	100,440	10,329,373,868,045	1,109	RIPE
NetCom BW GmbH	100,352	42,949,672,960	49	RIPE
RCN	100,352	-	157	RIPE
Trooli Ltd.	99,840	68,719,476,736	20	RIPE
Servers Australia Pty. Ltd	99,584	25,769,803,776	51	APNIC
Fanava Group	99,328	38,654,705,664	5	RIPE
Intesa Sanpaolo S.p.A.	99,328	34,359,738,368	16	RIPE
noris network AG	99,328	34,359,738,368	14	RIPE
Nazwa.pl Sp.z.o.o.	99,328	4,294,967,296	4	RIPE
Cogent Communications Group LLC	99,312	4,294,770,688	11	RIPE
Cyber_Folks S.A.	98,816	296,352,808,960	56	RIPE
Santander Global Technology and Operations, S.L.	98,816	34,359,738,368	27	RIPE
TotalEnergies SE	98,560	-	3	RIPE
Vianova S.p.A	98,304	103,079,215,104	1,463	RIPE
Salt Mobile SA	98,304	34,359,738,368	3	RIPE
Zscaler Australia PTY LTD	98,304	4,294,967,296	4	APNIC
Scarlet Belgium NV	98,304	-	6	RIPE
Smile Communications Nigeria	98,304	-	3	AFRINIC
PT Atharva Telematika Persada	97,536	4,023,386,112	13	RIPE
Lounea Palvelut Oy	97,280	38,654,705,664	18	RIPE
ENTEGA Medianet GmbH	97,280	4,294,967,296	29	RIPE
Invermae Solutions SL	97,024	962,072,674,304	267	RIPE
UAB Nacionalinis Telekomunikaciju Tinklas	96,952	4,294,901,760	58	RIPE
TRADITIONAL LLC	96,512	34,359,738,368	16	RIPE
Timeweb, LLP	96,256	65,536	377	RIPE
Radore Veri Merkezi Hizmetleri A.S.	96,254	42,949,672,960	28	RIPE
Nomotech SAS	96,000	73,014,444,032	16	RIPE
Mod Mission Critical LLC	96,000	34,359,738,368	405	RIPE
GTT Communications Belgium N.V.	95,232	4,294,967,296	11	RIPE
Primetel PLC	95,232	4,294,967,296	17	RIPE
REEVO S.P.A.	94,464	141,733,920,768	23	RIPE
Linkdotnet Telecom Limited	94,208	8,589,934,592	8	APNIC
Finstar - Sociedade de Investimento e Participacoes S.A	94,208	4,294,967,296	48	AFRINIC
SPECTRANET LIMITED	94,208	4,294,967,296	6	AFRINIC
Kauno Technologijos Universitetas	93,696	68,719,935,488	30	RIPE
5G NETWORK OPERATIONS PTY LTD	92,672	60,129,673,216	68	APNIC
Equinix Services, Inc.	92,160	34,359,738,368	13	RIPE
Smeraldo S.p.A.	92,160	8,589,934,592	6	RIPE
University of Queensland	92,160	8,589,934,592	11	APNIC
Cyberlink AG	91,904	34,359,738,368	19	RIPE
BSE Software GmbH	91,648	34,359,738,368	7	RIPE
Main one Cable Company Nigeria Limited	91,648	4,295,098,368	10	AFRINIC
Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center	91,392	34,359,803,904	9	RIPE
Danmarks Tekniske Universitet	90,997	34,355,871,736	10	RIPE
Sia Nano IT	90,880	51,539,607,552	51	RIPE
National Electronics and Computer Technology Center	90,880	4,294,967,296	8	APNIC
Infomaniak Network SA	90,848	34,359,738,368	53	RIPE
KMD A/S	90,624	4,294,967,296	5	RIPE
Wortmann AG	90,368	34,359,738,368	6	RIPE
Verizon Norway AS	90,112	34,359,738,368	4	RIPE
Claranet Benelux B.V.	90,112	4,294,967,296	4	RIPE
iAdvantage Limited	90,112	4,294,967,296	5	APNIC
Technical University of Gdansk, Academic Computer Center TASK	90,112	4,294,967,296	4	RIPE
ALKIM BASIN YAYIN ILETISIM LTD. STI.	90,112	-	4	RIPE
DONGFONG-TW DongFong Technology Co. Ltd	90,112	-	3	RIPE
UMDAC, Umea University	90,112	-	4	RIPE
Signal Bredband AS	90,080	73,014,444,032	13	RIPE
Health New Zealand	89,856	131,072	19	APNIC
"Uzbektelekom" Joint Stock Company	89,345	73,014,509,568	35	RIPE
Australian Academic and Research Network	89,344	4,294,967,296	17	APNIC
Epic Communications Limited	89,088	34,359,738,368	10	RIPE
Business Connexion Communications	89,088	4,294,967,296	13	AFRINIC
VDC Powerbase Hong Kong Data Centers Limited	89,088	4,294,967,296	11	APNIC
ASK4 Limited	88,832	240,518,168,576	19	RIPE
JSC BALTICOM	88,320	68,719,411,200	21	RIPE
Nationwide Computer Systems, Inc. trading as IPTrading.com	88,320	-	13	RIPE
EDPNET Belgium BV	88,064	38,654,705,664	247	RIPE
The Chinese University of Hong Kong	88,064	4,294,967,296	12	APNIC
Department of Customer Service	88,064	65,536	17	APNIC
"OBIT" Ltd.	87,552	42,949,672,960	65	RIPE
Netorn LLC	87,552	4,294,967,296	14	RIPE