Longest Match / Organisations

Directory

Organisations

Who address space is registered to, ranked by how much they hold. The 5,000 largest of 89,873 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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.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
89,873
Holding a /22 or any IPv6
46,265
IPv4 space named
52%
Registries covered
3 of 5

OrganisationIPv4 addressesIPv6 /64sBlocksRegistry
Western Australia Police65,536-1APNIC
Western Power Corporation65,536-1APNIC
Westsaechsische Hochschule Zwickau65,536-1RIPE
Zuse Institute Berlin65,536-1RIPE
JSC "ER-Telecom Holding" Barnaul Branch65,53567,108,86535RIPE
kyberio GmbH65,52473,014,378,50013RIPE
Universita' degli Studi di Firenze65,50465,5372RIPE
Snowd Security OU65,28034,359,738,369273RIPE
Universita' degli Studi di Perugia65,28065,5372RIPE
Naetkraft Boraas Infra AB65,280-1RIPE
Universita' degli Studi di Udine65,280-1RIPE
inexio Informationstechnologie und Telekommunikation Gmbh65,20412,884,705,117103RIPE
q.beyond AG65,02468,719,476,73819RIPE
GNC Realisations 2026 Limited65,02434,359,738,36950RIPE
Universita' degli Studi di Catania65,02465,5373RIPE
Universita' degli Studi di Palermo65,02465,5372RIPE
JSC "ER-Telecom Holding" Kazan' Branch65,024-18RIPE
Commonwealth Bank of Australia64,7688,589,934,59411APNIC
Telecommunication Company of Azarbayejan Gharbi64,768-12RIPE
INTERRA telecommunications group, Ltd.64,51234,359,738,36915RIPE
THG HOSTING LIMITED64,5124,294,967,29716RIPE
TIS Dialog LLC64,50417,179,869,18831RIPE
Binero AB64,160107,373,920,264259RIPE
Viasat Satellite Services AB64,008-162RIPE
INTERNET COMPANY OF NEW ZEALAND LIMITED64,0008,589,934,59414APNIC
ICUK Computing Services Limited64,0004,294,967,29715RIPE
Institut Mines-telecom trading as Telecom Paris site de Palaiseau64,0004,294,901,7624RIPE
JSC "ER-Telecom Holding" Volgograd Branch64,00067,108,86528RIPE
Mobin Net Communication Company (Private Joint Stock)63,74434,359,738,36951RIPE
INTRED S.p.A.63,7448,589,934,59420RIPE
ENERGO-TELECOM LLC63,744-2RIPE
Foxtel Management Pty Ltd63,4884,295,032,83412APNIC
Intelsat Global Sales & Marketing LTD63,4884,294,967,2977RIPE
INTERDNESTRKOM, Sovmestnoe Zakrytoe Aktsionernoe Obshchestvo63,4884,294,967,29710RIPE
JSC "ER-Telecom Holding" Bryansk Branch63,48867,108,86537RIPE
Hochschule Esslingen63,48865,5372RIPE
Your Hosting B.V.63,358420,906,663,95269RIPE
Zayo Group UK Limited63,23234,359,738,36912RIPE
Resilans AB63,23234,357,575,70945RIPE
Telecommunication Company of Gilan63,008-19RIPE
Unified National Networks62,72021,474,902,02116APNIC
WildPark Co62,7204,294,967,29716RIPE
Manchester Metropolitan University62,720-3RIPE
Zenlayer Inc61,95234,359,738,36914RIPE
National Research Center "Kurchatov Institute"61,95265,5376RIPE
IPv4 Management SRL61,696-168RIPE
Rio Tinto IS&T61,696-5APNIC
Kaisanet Oy61,44068,719,476,73811RIPE
Allay Nawroz Telecom Company for Communication/Ltd.61,44034,359,738,3695RIPE
Aptum Technologies (UK) Limited61,44025,769,803,7791,263RIPE
OOO "NI"61,44017,179,869,1858RIPE
ANDORRA TELECOM, S.A.U.61,4408,589,934,593113RIPE
AO IK "Informsvyaz-Chernozemye"61,4404,294,967,2977RIPE
Vodacom Lesotho (Pty) Ltd61,4404,294,967,2977AFRINIC
Northern Sydney Local Health District61,440-4APNIC
Swansea University61,440-2RIPE
Sociedad Estatal Correos y Telegrafos S.A.60,928-3RIPE
Genossenschaft GGA Maur60,41655,834,574,85423RIPE
ZAIN BAHRAIN B.S.C.60,41634,359,738,3696RIPE
Telcoinabox Operations Pty Ltd60,4168,589,934,5949APNIC
Dhivehi Raajjeyge Gulhun Public Limited Company60,4168,589,934,59316APNIC
Geoscience Australia60,41665,53718APNIC
IREN ENERGIA S.P.A59,6484,294,967,29725RIPE
Claranet SAS59,52860,129,542,15139RIPE
3xK Tech GmbH59,392309,237,645,32125RIPE
INTERCOMTEL Limited Company59,39268,719,476,73816RIPE
JSC Datacenter59,39238,654,705,66665RIPE
JOINT-STOCK COMPANY "TELEPORT TELECOM"59,3928,589,934,59413RIPE
China Unicom (Hong Kong) Operations Limited59,3924,294,967,29732APNIC
Orange Madagascar59,3924,294,967,29710AFRINIC
Hochschule Ravensburg-Weingarten59,392-1RIPE
Tech Mahindra Limited59,13612,884,901,89112APNIC
BSO Network Solutions SAS59,04817,179,934,72518RIPE
CRELCOM LLC58,9924,294,967,29727RIPE
Telecommunication Company of Khorasan Razavi58,952-20RIPE
Krixe Pte. Ltd.58,880107,373,527,047100RIPE
Amber IT Limited58,8804,294,967,2978APNIC
Knipp Medien und Kommunikation GmbH58,8804,294,967,29721RIPE
JSC "ER-Telecom Holding" Lipetsk Branch58,880-29RIPE
JSC "Silknet"58,62438,654,705,66623RIPE
Afranet58,62434,359,738,36913RIPE
Tafjord Connect AS58,62434,359,738,3697RIPE
WorkTitans B.V.58,368304,942,874,637304RIPE
Darkness Reigns (Holding) B.V.58,36868,719,935,49737RIPE
ASTA-NET S.A.58,3684,294,967,2975RIPE
Information and Communication Technologies LLC58,2808,589,934,59411RIPE
Bredband2 Stockholms Stadsnaet AB58,18234,359,738,36913RIPE
NForce Entertainment B.V.57,90534,359,738,369171RIPE
Southern Communications Ltd57,856223,338,299,40232RIPE
xTom GmbH57,792755,410,468,899207RIPE
Nebius B.V.57,60834,359,803,90611RIPE
Duale Hochschule Baden-Wuerttemberg Mannheim57,600-2RIPE
JSC "ER-Telecom Holding" Naberezhnye Chelny branch57,600-14RIPE
R-KOM Regensburger Telekommunikationsgesellschaft mbH57,34468,719,476,73817RIPE
Centre de Telecomunicacions i Tecnologies de la Informacio de la Generalitat de Catalunya57,3448,589,934,59421RIPE
SaveCom International Inc.57,3444,294,967,2975APNIC
Simbanet (T) Limited57,3444,294,967,2975AFRINIC
Gemeente Leeuwarden57,344327,6824RIPE
Centro Svizzero di Calcolo Scientifico57,34465,5372RIPE
Euronext Technologies SAS57,344-3RIPE
Skanska Sverige AB57,344-4RIPE
Ecritel SASU57,21612,884,901,89121RIPE
AC-Net AB57,0884,294,967,2974RIPE
Pulsant (Scotland) Ltd57,0884,294,967,29712RIPE
JSC "ER-Telecom Holding" Irkutsk Branch57,08867,109,12231RIPE
JSC "ER-Telecom Holding" Tyumen' branch57,088-29RIPE
DataWeb B.V.56,8324,294,967,29734RIPE
EQUINIX (SERVICES) LIMITED56,57634,359,803,90818RIPE
UltraNET Ltd56,57634,359,738,36924RIPE
Lumina Broadband UAB56,57665,537190RIPE
Silesian University of Technology, Computer Centre56,36634,359,738,3696RIPE
EIDSIVA DIGITAL AS56,32034,359,738,3699RIPE
Deutsche Glasfaser Wholesale GmbH56,32017,179,869,18813RIPE
Citytelecom LLC55,808115,964,182,53532RIPE
Iomart Group Plc55,80847,244,574,72530RIPE
Itm8 A/S55,552163,208,822,79553RIPE
Cyber_Folks SRL55,55238,654,705,66659RIPE
Data Storage Center JSC55,54460,129,542,15168RIPE
Prime Telecom srl55,4244,294,967,29733RIPE
Nextpertise B.V.55,29668,719,542,27538RIPE
PON.BG Ltd.55,29642,949,672,96337RIPE
Netonline Bilisim Sirketi LTD55,29638,654,705,66614RIPE
Ikoula Net SAS55,2968,589,934,59410RIPE
Equinix (Germany) GmbH55,04073,014,509,57223RIPE
Webzilla B.V.55,0404,294,967,297212RIPE
Teracom AB54,81668,719,476,73815RIPE
FIBRAWORLD TELECOM S.A.U.54,528176,093,724,67972RIPE
Leonet GmbH54,272103,079,215,10730RIPE
Autonomous Nonprofit Organisation "Russian Scientific-Research Institute for Public Networks"54,27234,358,165,523100RIPE
Onyx Internet Ltd54,2728,589,934,59412RIPE
Closed Joint Stock Company SibTransTelecom54,27216,777,21737RIPE
Altitude Infrastructure Exploitation SAS54,01668,719,476,7388RIPE
Synapse Network LTD53,76065,5377RIPE
Lodz University of Technology53,6794,294,701,0583RIPE
Leon Sp. z o.o.53,63234,359,738,36920RIPE
Politechnika Bydgoska im. Jana i Jedrzeja Sniadeckich53,50434,359,738,3699RIPE
Devoli LTD53,50417,179,869,18823APNIC
EVEREST TV AND RADIO COMPANY LLC53,248206,158,430,21426RIPE
Proximus Luxembourg S.A.53,24842,949,672,96310RIPE
CETIN Hungary Zrt.53,24834,359,738,3694RIPE
Inq. Digital Nigeria53,2484,294,967,2976AFRINIC
Orange Mali SA53,2484,294,967,297117AFRINIC
Equant Inc53,248-5APNIC
EDINAYA SET LIMITED LIABILITY COMPANY53,20021,474,836,482124RIPE
JSC "ER-Telecom Holding" Ryazan' Branch52,99267,112,96224RIPE
JSC "ER-Telecom Holding" Izhevsk branch52,99267,108,86521RIPE
Telecommunication Company of Mazandaran52,992-28RIPE
WHG Hosting Services Ltd52,64573,014,116,359158RIPE
CTS Computers and Telecommunications Systems SAS52,56751,539,345,41720RIPE
AS INFONET52,4804,295,032,8349RIPE
Link3 Technologies Limited52,22468,719,476,7377APNIC
CIZGI TELEKOMUNIKASYON ANONIM SIRKETI52,22434,359,738,36926RIPE
Evolink EAD52,2244,294,967,2977RIPE
Limes sp. z o.o.52,2084,294,967,2976RIPE
Coditel Brabant SPRL/BVBA51,968-35RIPE
NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENS51,968-5RIPE
KEVAG Telekom GmbH51,9048,589,213,70556RIPE
7Space SASU51,712-31RIPE
Sure (Guernsey) Limited51,4564,294,967,29738RIPE
P.D.R Solutions FZC51,456-11APNIC
CGI GLOBAL LIMITED51,45534,359,738,369184RIPE
GNC-Alfa CJSC51,20034,359,738,36915RIPE
MYREPUBLIC LIMITED51,20021,474,836,48519APNIC
BDCOM Online Limited51,2008,589,934,5937APNIC
Datak Company LLC51,2004,294,967,2976RIPE
Bilink LLC51,20065,5374RIPE
Universita' Ca' Foscari Venezia51,20065,5375RIPE
Ionis Group - Ionis Schools of Technology and Management SAS51,200-43RIPE
Secure Internet Limited51,200-3AFRINIC
My Net Fone Limited50,9444,294,967,29712APNIC
Parsan Lin Co. PJS50,9444,294,967,29736RIPE
UAB "Baltnetos komunikacijos"50,68855,834,574,85117RIPE
Fluidone Ltd.50,6888,589,934,59410RIPE
oja.at GmbH50,43251,539,673,09431RIPE
Obos Nett AS50,17642,949,672,96216RIPE
Altibox Danmark AS50,17634,359,738,3694RIPE
EPIC LTD50,17634,359,738,3698RIPE
Gulf Computer Services Co Ltd50,17634,359,738,3695RIPE
JSC Alma Telecommunications50,17634,359,738,36924RIPE
ML Consultancy50,17634,359,738,3695RIPE
NPS (Holdings) Limited50,17634,359,738,3693RIPE
Regus Group Services Ltd50,17634,359,738,3695RIPE
SCS-NET50,17634,359,738,3695RIPE
Ticinocom SA50,17634,359,738,3696RIPE
Viewqwest Pte Ltd50,17612,884,901,89013APNIC
Africa Online Operations (Mauritius) Limited50,1764,294,967,29742AFRINIC
Avanti Broadband Ltd50,1764,294,967,2975RIPE
ha-vel internet s.r.o.50,1764,294,967,2978RIPE
Internet Utilities Africa (PTY) LTD50,1764,294,967,2974AFRINIC
Rial Com JSC50,1764,294,967,29713RIPE
Sahara Al Jazeera Network Information Technology Company50,1764,294,967,2976RIPE
SOCIETE REUNIONNAISE DU RADIOTELEPHONE SCS50,1764,294,967,2977RIPE
UGMK-Telecom LLC50,1764,294,967,2978RIPE
Rumahweb50,17665,5378APNIC
JSC "ER-Telecom Holding" Tula Branch50,176-18RIPE
Societe Reunionnaise du Radiotelephone50,176-6AFRINIC
Horyzont Technologie Internetowe sp.z.o.o.49,92577,309,083,66141RIPE
Internet Rimon LTD49,92034,359,738,36913RIPE
JT (Jersey) Limited49,92034,359,738,36920RIPE
A2A Smart City S.P.A49,66434,359,738,36910RIPE
Infinivan Inc.49,6648,590,000,13016APNIC
DITO TELECOMMUNITY CORPORATION49,6644,294,967,2975APNIC
O.M.C. COMPUTERS & COMMUNICATIONS LTD49,536292,057,776,14067RIPE
THOMAS FAMILY INVESTMENTS LIMITED49,40898,784,247,811199RIPE
LLC "Nauka-Svyaz"49,40838,654,705,66654RIPE
JSC "RU-CENTER"49,40812,884,836,35642RIPE
Radware Ltd49,15238,654,771,20314RIPE
Jakobstadsnejdens Telefon Ab49,15234,359,738,3694RIPE
D-hosting die Rackspace & Connectivity GmbH49,15225,232,932,8665RIPE
Africa Independent Network Exchange (Pty) LTD (AfricaINX)49,1524,294,967,2973AFRINIC
ANET Co., Ltd.49,1524,294,967,2973APNIC
Digital Systems Ltd49,1524,294,836,22717RIPE
Amcor Flexibles Finland OY49,152-2RIPE
Arabcircle Internet Services for Saudi Arabia49,152-4RIPE
JSC "Company TransTeleCom" Magnitogorsk branch49,152-29RIPE
Organisation Internationale de Normalisation (ISO)49,152-1RIPE
Reseau Pedagogique Neuchatelois49,152-2RIPE
Verizon Hong Kong Limited49,152-4APNIC
JSC Mastertel48,89638,654,705,66634RIPE
LLC POWERNET48,89634,359,738,36913RIPE
ERNET India48,8964,294,967,29712APNIC
IIJ Global Solutions Inc.48,8964,294,967,29716APNIC
Baykov Ilya Sergeevich48,896131,074204RIPE
Posta Srbije Drustvo S Ogranicenom Odgovornoscu, Beograd48,896-5RIPE
User Association of Ukrainian Research and Academic Network URAN48,7448,589,737,9889RIPE
Kungliga Tekniska Hogskolan48,640131,07447RIPE
Core IP Solutions LLC48,640-156RIPE
Axera SpA48,384107,374,182,40431RIPE
JSC "ER-Telecom Holding" Penza Branch48,384-18RIPE
Internet Binat Ltd48,1294,294,967,29741RIPE
Manx Telecom Trading Ltd48,12834,359,738,36914RIPE
Previder B.V.48,1288,589,934,5948RIPE
JSC Kostroma Municipal Telephone Network48,1284,294,967,29712RIPE
Office des Postes et des Telecomm. de Nouvelle Caledonie48,1284,294,967,2979APNIC
Katholische Universitaet Eichstaett48,128-3RIPE
Tel. Pacific Pty Ltd48,128-9APNIC
Haridus- ja Teadusministeerium48,0804,293,984,27118RIPE
MAINFRAME & CYBERNETIC SYSTEMS LIMITED48,06434,359,672,83437RIPE
Opticomm Co Pty Ltd47,87225,769,869,31930APNIC
Odigo SASU47,4888,589,934,5949RIPE
Telecommunication Company of Azarbayejan Sharghi47,456-14RIPE
Hosting Ukraine LTD47,360519,691,042,83243RIPE
LLC "Real-net"47,104154,618,822,66427RIPE
Akenes SA47,10468,719,476,73835RIPE
NEAS ENERGI TELEKOM AS47,10468,719,476,73816RIPE
InfoLada Ltd47,10434,359,738,3697RIPE
RADIUS TELECOMS, INC.47,1048,589,934,59311APNIC
CSL Limited46,8484,295,032,8349APNIC
LanTa Ltd46,8484,294,967,29714RIPE
Optisprint OOD46,8484,294,967,29717RIPE