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MY IP IS - ISP List
On this page you can find the ISP list in alphabetical order.
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b
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u
v
w
x
y
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ISP List starting with "u"
U-LAN
- Russia
U-STETIENNE
- France
U-Turn Technology
- Bangladesh
U. S. Department of Transportation
- United States
U.B. Online
- Australia
U.p. Communication Services Pvt
- India
U.S. Agency International Development
- United States
U.S. Department of Energy
- United States
U.S. Department of Transportation
- United States
U.S. Dept. of Health and Human Services
- United States
U.S. Environmental Protection Agency
- United States
U.S. House of Representatives
- United States
U.S. Immigration and Naturalization Service
- United States
U.S. Sprint
- Bulgaria
U Mobile Sdn Bhd
- Malaysia
UA VPS LLC
- Ukraine
UAB "Baltnetos komunikacijos"
- Lithuania
UAB "Bite Lietuva"
- Latvia
UAB "Bite Lietuva"
- Lithuania
UAB "Cgates"
- Republic of Lithuania
UAB "Kauno interneto sistemos"
- Lithuania
UAB "Kauno Interneto Sistemos"
- Republic of Lithuania
UAB Balticum TV
- Republic of Lithuania
UAB Baltnetos komunikacijos
- Republic of Lithuania
UAB Bite Lietuva
- Latvia
UAB Bite Lietuva
- Republic of Lithuania
UAB Cgates
- Republic of Lithuania
UAB Cherry Servers
- Lithuania
UAB Cherry Servers
- Netherlands
UAB Cherry Servers
- Republic of Lithuania
UAB Consilium Optimum
- Republic of Lithuania
UAB INIT Corporation
- Republic of Lithuania
UAB Interneto vizija
- Republic of Lithuania
UAB Kauno interneto sistemos
- Republic of Lithuania
UAB Mezon
- Lithuania
UAB Nacionalinis Telekomunikaciju Tinklas
- Republic of Lithuania
UAB NNT
- Republic of Lithuania
UAB Radijo elektronines sistemos
- Lithuania
UAB Rakrejus
- Lithuania
UAB Rakrejus
- Republic of Lithuania
UAB Rakrejus
- United States
UAB Roventa
- Republic of Lithuania
UAGRUP LLC
- Ukraine
UARNET-LL
- Ukraine
Uarnet
- Ukraine
Uau Telecom Ltda ME
- Brazil
UBBNET
- Taiwan
Uber Technologies Limited
- Bangladesh
Ubiquity Server Solutions Chicago
- United States
Ubiquity Server Solutions Los Angeles
- United States
UBIS S.C.p.A.
- Italy
Ubmex Data Center E Telecomunicacoes Ltda
- Brazil
UBS AG
- Switzerland
UBS AG
- United States
UBTANET
- United States
UCANET
- Russia
Ucell
- Uzbekistan
Ucell net1
- Uzbekistan
Ucell net4
- Uzbekistan
UCI - Radboud University Nijmegen
- Netherlands
UCL-CS-TEMP
- United Kingdom
UCLOUD
- China
UCloud (HK) Holdings Group Limited
- Germany
UCloud (HK) Holdings Group Limited
- Hong Kong
UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED
- Hong Kong
UCOM Corp.
- Japan
Ucom LLC
- Armenia
Ucom Llc.
- Armenia
Ucom Mobile Network
- Armenia
Udan Enterprise Pvt
- India
Udasha S.A
- United States
Udayatel Communications Private Limited
- India
UDG Herrenberg GmbH
- Germany
UDMEDIA
- Germany
UDUS
- Nigeria
Ueda Cable Vision Co.,ltd.
- Japan
Ufa Scientific Center
- Russia
Ufinet Panama S.A.
- Nicaragua
Ufone GSM
- Pakistan
UFPS-RND
- Russia
UGB Hosting OU
- Austria
UGB Hosting OU
- Estonia
UGB Hosting OU
- Germany
UGB Hosting OU
- India
UGB Hosting OU
- Poland
UGB Hosting OU
- Russia
UGB Hosting OU
- Turkey
UGB Hosting OU
- United Kingdom
UGMK-Telecom LLC
- Russia
Ugresha Network Ltd.
- Russia
UIH / BB Broadband
- Thailand
Uin Ar-raniry
- Indonesia
UK-2 Limited
- Egypt
UK-2 Limited
- Germany
UK-2 Limited
- Liechtenstein
UK-2 Limited
- Netherlands
UK-2 Limited
- Russia
UK-2 Limited
- United Kingdom
UK-2 Limited
- United States
UK-3NT
- Ukraine
UK-DWP
- United Kingdom
UK-EASYSPACE
- United Kingdom
UK-FREETHOUGHT
- United Kingdom
UK-GLOBAL
- United Kingdom
UK-NC
- United Kingdom
UK-NETLINE
- United Kingdom
UK-PRIVAX
- Belgium
UK-PRIVAX
- Belize
UK-PRIVAX
- Bermuda
UK-PRIVAX
- Colombia
UK-PRIVAX
- Egypt
UK-PRIVAX
- Germany
UK-PRIVAX
- Senegal
UK-PRIVAX
- United States
UK-PRIVAX
- Uruguay
UK-THINK
- Netherlands
UK-TM
- United Kingdom
UK2
- United Kingdom
UK2.NET
- France
UK2.NET
- Netherlands
UK2.NET
- United Kingdom
UK2 - Ltd
- Netherlands
UK2 Customer
- United Kingdom
UK2 Infrastructure
- Netherlands
UK2 Net1
- United Kingdom
UK2NET Frankfurt
- Germany
UK Broadband
- United Kingdom
UK Broadband - LTE
- United Kingdom
UK Broadband Ltd.
- United Kingdom
UK Data Centre
- United Kingdom
UK Dedicated Servers Limited
- United Kingdom
UK Dedicated Servers Ltd
- United Kingdom
UK Government Department Work and Pensions
- United Kingdom
UK Ministry of Defence
- United Kingdom
UK Ministry of Defence
- United States
UK Web.Solutions Direct Ltd
- Austria
UK Web.Solutions Direct Ltd
- Czechia
UK Web.Solutions Direct Ltd
- Denmark
UK Web.Solutions Direct Ltd
- France
UK Web.Solutions Direct Ltd
- Germany
UK Web.Solutions Direct Ltd
- Hungary
UK Web.Solutions Direct Ltd
- Italy
UK Web.Solutions Direct Ltd
- Netherlands
UK Web.Solutions Direct Ltd
- Norway
UK Web.Solutions Direct Ltd
- Singapore
UK Web.Solutions Direct Ltd
- Spain
UK Web.Solutions Direct Ltd
- Switzerland
UK Web.Solutions Direct Ltd
- United Kingdom
UK Webhosting Ltd
- United Kingdom
UKB-Enterprise
- United Kingdom
UKDedicated LTD
- United Kingdom
UKFAST.NET LIMITED
- United Kingdom
UKfastnet Ltd
- United Kingdom
UKHost4u
- United Kingdom
UKNHS
- United Kingdom
Ukraine Optical Systems LLC
- Ukraine
Ukraine telecommunication group Ltd.
- Ukraine
Ukrainian Newest Telecommunication Ltd.
- Ukraine
Ukrchermetavtomatika LLC
- Ukraine
UKRCOM
- Ukraine
Ukrdatakom Ltd
- Ukraine
Ukrmirkom Ltd
- Ukraine
UKRNAMES
- Ukraine
UKRPACK
- Ukraine
UKRTELECOM
- Ukraine
UKRTELECOM DATA CENTER Gutsal AV
- Ukraine
UKWEBHOSTING EQX Customer Servers
- United Kingdom
Ulaanbaatar-211213. Chingeltei district
- Mongolia
ULAKNET
- Turkey
ULGRP
- United Kingdom
ULNPLSUM
- India
Ulsan Jung-Ang Broadcasting Network
- Republic of Korea
Ulsan Jung-Ang Broadcasting Network
- South Korea
Ultel
- Azerbaijan
Ultel LLC
- Azerbaijan
Ultimate Internet Access
- United States
Ultra Internet Communications LLC
- United Kingdom
Ultra Internet Communications LLC
- United States
Ultra Telecom Ltd.
- Brazil
ultraconexão soluçoes eireli
- Brazil
Ultranet
- Bulgaria
Ultranet
- India
Ultranet Infotech Solution Private Limited
- India
UltraNET Ltd.
- Bulgaria
UltraNET Ltd. C59
- Bulgaria
Ultranet services private limited
- India
Ultranet Sp. z o.o.
- Poland
ULTRASERVE
- Australia
Ultrawave Telecom
- Brazil
ULUNET
- Turkey
ULUSNET-ISP
- Mongolia
UMC
- Ukraine
Umniah Lil-Hawatef Al-Mutanaqelah Co.
- Germany
Umniah Lil-Hawatef Al-Mutanaqelah Co.
- Hashemite Kingdom of Jordan
Umniah Lil-Hawatef Al-Mutanaqelah Co.
- Jordan
Umniah Mobile Company
- Hashemite Kingdom of Jordan
Umniah Mobile Company
- Jordan
Umniah Mobile Company PLC
- Hashemite Kingdom of Jordan
UMobile
- Malaysia
Umobile Public
- Malaysia
UMS
- Malaysia
UMTS backbone
- Georgia
Unacs Ltd
- Bulgaria
UNCENSOREDDNS
- Denmark
UnderNet LLC
- Ukraine
UNE
- Colombia
Unelink
- Spain
UNET-NETWORK
- Netherlands
Unet B.V.
- Netherlands
Unet Communication LLC
- Russia
Unetvale Servicos e Equipamentos LTDA
- Brazil
UNHfree.net z.s.
- Czechia
UNI-KOELN
- Germany
UNI2-NET- Orange Spain Network
- Spain
UNI2-NET - Orange Spain Network
- Spain
UNI2-NET Orange Spain Network OPL
- Spain
Uni2
- Spain
Uni2 1
- Spain
Uni2 XDSL customers YIF
- Spain
UNIBRAW
- Indonesia
UNIBZ
- Italy
Unica Technology Ltda ME
- Brazil
Unica Telecomunicazioni s.r.l.
- Italy
UNICOM
- China
UNICOM-NM-WuLanChaBu-IDC
- China
UNICOM Hubei
- China
UNICOM Liaoning
- China
UNICOM Sichuan
- China
UNICOM yunnan
- China
UNICOM ZheJiang
- China
UNICOMLAB
- Russia
UniCredit Business Integrated Solutions S.C.p.A.
- Italy
Unics Ltd.
- Bulgaria
UNIDATA
- Italy
UNIDATA S.p.A.
- Italy
Unidish LLC
- Mongolia
UNIFFM
- Germany
UNIFI-HOME
- Malaysia
Unified Layer
- United States
Unified National Networks
- Brunei
Unifique TelecomunicaÔÔes SA
- Brazil
Unifique Telecomunicações Ltda
- Brazil
UNIFONENETWORKS
- New Zealand
UNILEI
- Germany
Unilever PLC
- United Kingdom
Unilink Ltd
- Russia
Unimedia-services
- France
UNINA
- Indonesia
UniNet(Inter-university network)
- Thailand
UNINET-
- Thailand
Uninet
- Azerbaijan
UNINET
- Estonia
Uninet
- South Africa
UNINET Project
- South Africa
Uninet S.A. de C.V
- Mexico
Uninet S.A. de C.V.
- Mexico
UNINET Sp. z o.o.
- Poland
UNINETT
- Norway
UNINETT AS
- Norway
Union Broadband Network
- Taiwan
Union De Telecomunicaciones Del Poniente De Almeri
- Spain
Union Group LLC
- Russia
Union Pacific Railroad Company
- United States
UnionCOM Ltd
- Ukraine
Uniregistry Corp.
- Cayman Islands
Uniserve On Line
- Canada
Uniserver Internet B.V.
- Netherlands
UNISYS
- United States
Unisys Corporation
- United States
Unitary enterprise A1
- Belarus
Unitary enterprise velcom
- Belarus
Unitas Global LLC
- United States
Unitcom Eesti Ou
- Estonia
Unite Private Networks LLC.
- United States
United Financial Bancorp
- United States
United Information Highway Co
- Thailand
United Information Highway Co., Ltd.
- Thailand
United Nations Development Programme
- Argentina
United Network LLC
- Russia
United Networks Ltd.
- Belarus
United Networks Ltd.
- Russia
United Parcel Service
- United States
United S.A.S.
- Democratic Republic of the Congo
United States Cellular Telephone Company
- United States
United States Postal Service.
- United States
United Technologies Corporation
- United States
United Telecom Network
- Georgia
United Telecommunication Services
- Curacao
United Telecommunication Services (UTS)
- Curaçao
United Telephone Association, Inc.
- United States
UNITEL
- Laos
UNITEL-MEDIA Sp. z o.o.
- Poland
Unitel LLC
- Uzbekistan
UNITEL SA
- Angola
UnitelMobileCustomerPool1
- Angola
UnitelNetworkPool3
- Angola
Unithost Internet B.V.
- Netherlands
Uniti Fiber
- United States
Uniti Fiber Holdings Inc.
- United States
Uniti Wireless Pty
- Australia
Uniti Wireless PTY LTD
- Australia
Unitron Systems & Development LTD
- United Kingdom
Unitymedia
- Germany
Unité
- Republic of Moldova
UNIV-MRS
- France
Univera Network
- Canada
Univera Network
- Hong Kong
Univera Network
- Singapore
Univera Network
- United Kingdom
Univera Network
- United States
Universal Broadband Services
- India
Universal IP Solution Corp.
- Poland
Universal Media Network Ltd
- Russia
Universal Mobile Systems LCC
- Uzbekistan
Universal Tele Services
- India
Universal Telecom Experts S.L
- Spain
Universal Telecom S.A.
- Brazil
Universidad Autonoma De Ciudad Juarez
- Mexico
Universidad Autonoma de Nuevo Leon
- Mexico
Universidad Catolica De Honduras
- Honduras
Universidad de Adolfo Ibañez
- Chile
Universidad de Antioquia
- Colombia
Universidad de Costa Rica
- Costa Rica
Universidad de Extremadura
- Spain
Universidad de Guadalajara
- Mexico
Universidad de Las Americas-Puebla
- Mexico
Universidad de Zaragoza
- Spain
Universidad del Valle de Guatemala
- Guatemala
Universidad Mayor de San Andres
- Bolivia
Universidad Nacional Autonoma de Mexico
- Mexico
Universidad Nacional Autónoma De Honduras
- Honduras
Universidad Nacional de Buenos Aires
- Argentina
Universidad Nacional de Loja
- Ecuador
Universidad Nacional de San Luis
- Argentina
Universidad Regiomontana
- Mexico
Universidade Catolica Portuguesa
- Portugal
Universidade de Coimbra
- United States
Universidade De Sao Paulo
- Brazil
Universidade Estadual De Campinas
- Brazil
Universidade Estadual Paulista
- Brazil
Universidade Federal De Minas Gerais
- Brazil
Universidade Federal de Santa Catarina
- Brazil
Universidade Federal do Rio Grande do Sul
- Brazil
Universita' degli Studi di Napoli Federico II
- Italy
Universita' degli Studi di Parma
- Italy
Universita' degli Studi di Roma La Sapienza
- Italy
Universita' degli Studi di Roma Tor Vergata
- Italy
Universita' della Calabria
- Italy
Universitaet Bern
- Switzerland
Universitaet fuer Bodenkultur, Wien
- Austria
Universitaet Hamburg
- Germany
Universitaet Hamburg campus net
- Germany
Universitaet Heidelberg
- Germany
Universitaet Hohenheim
- Germany
Universitaet Kiel
- Germany
Universitaet Klagenfurt
- Austria
Universitaet St. Gallen
- Switzerland
Universitaet Stuttgart
- Germany
Universitaet Trier
- Germany
Universitaet zu Koeln
- Germany
Universitas Bina Darma Palembang
- Indonesia
Universitas Islam Bandung
- Indonesia
Universitas Islam Negeri Mataram
- Indonesia
Universitas Muhammadiyah Purwokerto
- Indonesia
Universitas Padjadjaran
- Indonesia
Universitas Pendidikan Indonesia
- Indonesia
Universitas Riau
- Indonesia
Universitas Sebelas Maret
- Indonesia
Universitas Trunojoyo Madura
- Indonesia
Universitatea TRANSILVANIA Brasov
- Romania
Universite de Bordeaux - DSI
- France
Universite de Geneve
- Switzerland
Universite de Liege (ULg)
- Belgium
Universite De Strasbourg
- France
Universiteit Utrecht
- Netherlands
Universiteit van Amsterdam
- Netherlands
Universiteit van Tilburg
- Netherlands
Universiti Kebangsaan Malaysia
- Malaysia
Universiti Malaysia Sabah, Jalan UMS, , Kota Kinabalu Sabah 88400
- Malaysia
Universiti Malaysia Sabah
- Malaysia
Universiti Putra Malaysia Campus Network
- Malaysia
Universiti Selangor
- Malaysia
Universiti Teknologi Malaysia
- Malaysia
University at Albany, State University of New York
- United States
University College Dublin
- Ireland
University College London
- United Kingdom
University de Los Andes
- Colombia
University Grants Commission of Bangladesh
- Bangladesh
University Health Network
- Canada
University Malaysia Pahang
- Malaysia
University of Alabama at Birmingham - The Universi
- United States
University of Alaska
- United States
University of Alberta
- Canada
University of Arkansas-Fort Smith
- United States
University of Arkansas
- United States
University of Belgrade
- Serbia
University of Bridgeport
- United States
University of British Columbia
- Canada
University of Calgary
- Canada
University of California, Irvine
- United States
University of California, Los Angeles
- United States
University of California, Riverside
- United States
University of California, San Diego
- Argentina
University of California, San Diego
- Austria
University of California, San Diego
- Curacao
University of California, San Diego
- Denmark
University of California, San Diego
- France
University of California, San Diego
- Germany
University of California, San Diego
- Japan
University of California, San Diego
- United States
University of California, Santa Barbara
- United States
University of California at Berkeley
- United States
University of California San Francisco
- United States
University of Cambridge
- United Kingdom
University of Cape Town
- South Africa
University of Central Missouri
- United States
University of Chicago
- United States
University Of Chittagong
- Bangladesh
University of Colorado Hospital
- United States
University of Connecticut
- United States
University of Delaware
- India
University of Delaware
- United States
University of Denver
- United States
University of Ghana
- Ghana
University of Hertfordshire
- United Kingdom
University of Illinois
- United States
University of Innsbruck
- Austria
University of Iowa
- United States
University of Kent
- United Kingdom
University of Maine System
- United States
University of Malaya
- Malaysia
University of Maryland
- United States
University of Maryland Baltimore County (UMBC)
- United States
University of Maryland ollege
- United States
University of Massachusetts Medical School
- United States
University of Michigan
- United States
University of Minnesota
- United States
University of Missouri - dba the Missouri Research
- United States
University of Missouri - dba the Missouri Research and Education Network
- United States
University of New Hampshire
- United States
University of New Mexico
- United States
University of New Orleans
- United States
University of Newcastle upon Tyne
- United Kingdom
University of North Carolina at Chapel Hill
- United States
University of North Texas
- United States
University of Northern Colorado
- United States
University of Notre Dame
- United States
University of Oregon
- United States
University of Ottawa
- Canada
University of Patras
- Greece
University of Pennsylvania
- United States
University of Portsmouth
- United Kingdom
University of Prince Edward Island
- Canada
University of Puerto Rico
- Puerto Rico
University of Rajshahi
- Bangladesh
University of Rochester
- United States
University of Sheffield
- United Kingdom
University Of South Florida
- United States
University of Southern California
- Ghana
University of Southern California
- United States
University of Stellenbosch
- South Africa
University of Sydney
- Australia
University of Technology and Life Sciences Bydgosz
- Poland
University of Tennessee
- United States
University of Tennessee Space Institute
- United States
University of Texas Medical Branch
- United States
University of Texas System
- United States
University of the Witwatersrand
- South Africa
University of Toronto
- Canada
University of Utah
- United States
University of Virginia
- United States
University of Washington
- United States
University of Waterloo
- Canada
University of Western Australia
- Australia
University of Western Ontario
- Canada
University of Wisconsin - Milwaukee
- United States
University of Wisconsin Hospital and Clinics
- United States
University of Wisconsin Madison
- United States
University Telecommunications Ltd.
- Russia
Universo Online S.A
- Brazil
Universo Online S.A.
- Brazil
Univision
- Mongolia
Univision LLC
- Mongolia
Unlimited Web Hosting UK LTD
- United Kingdom
UNLIMITEDNET
- United States
Unmanaged LTD
- United Kingdom
UnmeteredInternet.com
- Belize
UnmeteredInternet.com
- Canada
uno Communications
- United Kingdom
UNOCOMM-METRO-MI
- Italy
Unolink Telecom Ltda ME
- Brazil
UNTC
- Ukraine
Unum Group
- United States
Unus
- Argentina
Unus
- Austria
Unus
- Belgium
Unus
- Brazil
Unus
- Costa Rica
Unus
- Czechia
Unus
- Denmark
Unus
- El Salvador
Unus
- Finland
Unus
- France
Unus
- Germany
Unus
- Hong Kong
Unus
- Ireland
Unus
- Liechtenstein
Unus
- Mexico
Unus
- Netherlands
Unus
- Norway
Unus
- Poland
Unus
- Republic of Korea
Unus
- Republic of Lithuania
Unus
- Romania
Unus
- Russia
Unus
- Sweden
Unus
- Switzerland
Unus
- Ukraine
Unus
- United States
Unus Inc
- Argentina
Unus Inc
- Mexico
Unus Inc
- Philippines
Unus Inc
- Switzerland
Unus Inc
- United Arab Emirates
Unus Inc
- United States
Unus Inc
- Vietnam
Unwired
- United States
Unwired Broadband, Inc.
- United States
Unyc SAS
- France
UOL DIVEO S.A.
- Brazil
UOW
- Australia
UP Diliman Network
- Philippines
UPATRAS
- Greece
UPC
- Belgium
UPC
- Hungary
UPC-PL Residential LG-Loan
- Poland
UPC
- Romania
UPC.nl Network Services
- Netherlands
UPC.pl
- Poland
UPC AT
- Austria
UPC Austria
- Austria
UPC Austria
- Germany
UPC Austria
- Netherlands
UPC Austria GmbH
- Austria
UPC Austria GmbH
- Netherlands
UPC Broadband
- Netherlands
UPC Broadband Internet Services
- Czech Republic
upc cablecom GmbH
- Switzerland
UPC Ceska Republica
- Czech Republic
UPC Ceska Republica
- Czechia
UPC Ceska Republica
- Germany
UPC Ceska republika
- Czechia
UPC CH - Cablecom
- Switzerland
UPC Czech
- Czechia
UPC DTH HU
- Hungary
UPC Hungary
- Hungary
UPC Magyarorszag
- Hungary
UPC Magyarorszag Kft.
- Hungary
UPC Netherlands
- Netherlands
UPC NL
- Netherlands
UPC PL
- Poland
UPC Poland
- Poland
UPC Polska
- Hungary
UPC Polska
- Poland
UPC Romania
- Romania
UPC Romania -mm
- Romania
UPC Romania S.R.L
- Romania
UPC Romania S.R.L.
- Romania
UPC Romania Srl
- Romania
UPC Schweiz
- Switzerland
UPC Schweiz GmbH
- Switzerland
UPC Slovakia
- Slovakia
UPC Slovensko s.r.o
- Slovak Republic
UPC Slovensko s.r.o
- Slovakia
UPC Technology
- Austria
UPCLOUD
- Germany
UPCLOUD-LON
- United Kingdom
UpCloud Ltd
- Finland
UpCloud Ltd
- Germany
UpCloud Ltd
- Netherlands
UpCloud Ltd
- Singapore
UpCloud Ltd
- United Kingdom
UpCloud USA
- United States
UpCloud USA Inc
- United States
Uplink Ltd.
- Russia
Uplink SRL
- Luxembourg
Upm Internet Services Pvt.
- India
UPMC
- France
Upnet Provedor De Acesso E Telecom
- Brazil
UPNET Technologies Co.
- China
Upper Columbia Conference / SDA
- United States
Uprava za zajednicke poslove republickih organa
- Serbia
UPRIGHT
- Japan
Uptime internal Network
- Germany
Ural-NET INC.
- Russia
Ural Branch of OJSC MegaFon GPRS/UMTS Network
- Russia
Ural Regional Bank Net "UralWES"
- Russia
Urban NET
- Brazil
Urzad Dzielnicy Bemowo m.st. Warszawy
- Poland
US-RACKSPOT8
- United Kingdom
US2
- Netherlands
US Courts
- United States
US Dedicated
- United States
US Department of Defense Network
- United States
US Dept of Justice
- United States
US Internet Corp
- United States
US Net Incorporated
- United States
US Signal Company, L.L.C.
- United States
US Signal Company
- United States
Usa Companies, LLC
- United States
USAREC
- United States
USBI
- United Kingdom
USDA
- United States
USEN-NDS
- Japan
Uslugi Transportowe I Internetowe Trans-Net Grzego
- Poland
Usonet Tecnologic Ltda - Epp
- Brazil
USONYX
- Singapore
Usonyx Pte
- Singapore
USONYX Pte.Ltd.
- Singapore
USTB
- China
Utah Education Network
- United States
Uteam LTD
- Ukraine
UTEHRAN
- Iran
UTELECOMUA B2
- Ukraine
Utelisys B.V
- Netherlands
Utelisys B.V.
- Netherlands
Utelisys Communications B.V.
- Netherlands
UTFORS
- Sweden
UTG MPLS
- Georgia
UTG MPLS DSL
- Georgia
Utopia Networks
- India
UUNET
- Netherlands
UUNET
- Norway
UUNETDE
- Germany
uvensys GmbH
- Germany
UVT Internet s.r.o.
- Czechia
UWBR VOX Telecomunicações S/A
- Brazil
Uydunet
- Turkey
Uzbektelecom JSC
- Uzbekistan
Uzbektelekom Joint Stock Company
- Uzbekistan
Uzzy Telecom
- Brazil