¿Cómo saber a quién pertenece esa IP desde la que te están mandando spam o saturando tu blog? Hay muchas formas de saberlo, existen bases de datos que contienen los rangos de IPs que corresponden a cada proveedor y se puede descargar en un pequeño archivo de texto para consultarlo.

El archivo es demasiado extenso para ser publicado aquí, pero se puede descargar actualizado del ftp de Ripe.net.

Ahí van las IPs de algunos proveedores y entidades españolas:

es.arsys
ARSYS INTERNET S.L.

20031222 82.223/16 ALLOCATED PA
20001128 217.76.128/20 ALLOCATED PA
20021007 217.76.144/20 ALLOCATED PA
20030326 2001:0ba0::/32

es.euskaltel
Euskaltel

20010618 62.99/17 ALLOCATED PA
20030717 82.130.128/17 ALLOCATED PA
20040322 83.213/16 ALLOCATED PA
20041022 85.84/14 ALLOCATED PA
19990702 212.8.64/18 ALLOCATED PA
19980403 212.55/19 ALLOCATED PA
20000818 212.142.128/17 ALLOCATED PA

es.jazztel
Jazz Telecom S.A.

19991202 62.14/16 ALLOCATED PA
20000720 62.15/16 ALLOCATED PA
20050607 87.216/13 ALLOCATED PA
19990507 212.106.192/19 ALLOCATED PA
20000609 212.106.224/19 ALLOCATED PA

es.knet
Knet Comunicaciones, S.L.

20031128 82.199.32/19 ALLOCATED PA

es.ono
ONO

20000503 62.42/16 ALLOCATED PA
20001106 62.43/16 ALLOCATED PA
20021112 81.202/15 ALLOCATED PA
20040415 84.120/13 ALLOCATED PA
19990519 212.95.192/19 ALLOCATED PA
19991117 212.122.96/19 ALLOCATED PA
19991122 213.201/17 ALLOCATED PA

es.rediris
Departamento RedIRIS, Entidad publica empresarial RED.ES

19940802 193.144/15 ALLOCATED PA
19940802 193.146/16 ALLOCATED PA
19960202 193.147/16 ALLOCATED PA
19981028 212.128.0/16 ALLOCATED PA
20010521 2001:0720::/35
20020709 2001:0720:2000::/35
20020709 2001:0720:4000::/34
20020709 2001:0720:8000::/33

es.retevision
Retevision S.A.

19980330 62.81/16 ALLOCATED PA
19990504 62.82/16 ALLOCATED PA
20000211 62.83/16 ALLOCATED PA
20000822 62.174/15 ALLOCATED PA
20010928 80.224/16 ALLOCATED PA
20021212 81.60/15 ALLOCATED PA
20060213 89.140/15 ALLOCATED PA
19991005 194.106.0/19 ALLOCATED PA
19991005 194.149.192/19 ALLOCATED PA

es.telefonica
TELEFONICA DE ESPANA

20010709 80.24/15 ALLOCATED PA
20011112 80.32/13 ALLOCATED PA
20010613 80.58/15 ALLOCATED PA
20020215 81.32/12 ALLOCATED PA
20031202 83.32/12 ALLOCATED PA
20041007 83.48/12 ALLOCATED PA
20050713 88/11 ALLOCATED PA
20000301 213.96/15 ALLOCATED PA
20000517 213.98/16 ALLOCATED PA
20010307 217.125/16 ALLOCATED PA
20010307 217.126/15 ALLOCATED PA
20021108 2001:09d8::/32

es.ttd
TELEFONICA DATA ESPANA

20010709 80.26/15 ALLOCATED PA
20010709 80.28/14 ALLOCATED PA
19971120 193.152/15 ALLOCATED PA
19961204 194.69.224/19 ALLOCATED PI
19951020 194.179.0/17 ALLOCATED PA
19951222 194.224/16 ALLOCATED PA
19961219 195.53/16 ALLOCATED PA
19961219 195.55/16 ALLOCATED PA
19961219 195.57/16 ALLOCATED PA
19960610 195.76/16 ALLOCATED PA
19961202 195.77/16 ALLOCATED PA
19971208 195.235/16 ALLOCATED PA
19990225 212.170/16 ALLOCATED PA
19990527 213/16 ALLOCATED PA
19990809 213.4/16 ALLOCATED PA
20000517 213.99/16 ALLOCATED PA
20010307 217.124/16 ALLOCATED PA
20020705 2001:0800::/32

es.yacom
Ya.com Internet Factory

20001121 62.151/16 ALLOCATED PA
20040423 84.76/14 ALLOCATED PA
20060117 89.128/14 ALLOCATED PA

y continuando, la lista completa para España:

es.abceutelcom
ABC Eutelcom, S.L.

20000512 62.44.32/19 ALLOCATED PA

es.able
Aragon de Cable, S.A.

20020227 62.101.160/19 ALLOCATED PA
20031114 82.198.32/19 ALLOCATED PA
20040816 83.138.192/18 ALLOCATED PA
20050207 85.251/16 ALLOCATED PA
19990730 212.97.160/19 ALLOCATED PA

es.abrared
NEO-SKY 2002, S.A.

20010720 80.81.96/20 ALLOCATED PA
20020131 80.81.112/20 ALLOCATED PA
20030528 82.144/19 ALLOCATED PA
20040604 83.175.192/18 ALLOCATED PA
20030217 213.171.224/19 ALLOCATED PA
20001219 213.172.32/19 ALLOCATED PA
20010403 217.172.64/20 ALLOCATED PA

es.activanet
METRORED S.A.

20000418 213.162.192/19 ALLOCATED PA

es.activobank
Banco Sabadell

20020703 81.90.96/20 ALLOCATED PA

es.adam
OGIC Informatica S.L. – ADAM Internet

20030704 212.36.64/19 ALLOCATED PA

es.adv
Sistelcom Telemensaje S.A./ADV

19961115 195.82.128/19 ALLOCATED PA

es.aiaf
AIAF Mercado de Renta Fija (closed)

es.airtel
VODAFONE ESPANA S.A.

20010529 62.87/17 ALLOCATED PA
19990617 212.73.32/19 ALLOCATED PA
19990806 212.166.128/18 ALLOCATED PA
20000606 212.166.192/18 ALLOCATED PA

es.aitic
AITIC INTERNET S.L.

20050706 86.109.96/19 ALLOCATED PA

es.alarcos
Alarcos

20010108 217.112.96/20 ALLOCATED PA

es.alo2000
ALO COMUNICACIONES S.A.

20000510 213.250.128/19 ALLOCATED PA
20010301 213.250.160/19 ALLOCATED PA

es.altecom
Alta Tecnologia en Comunicaciones, S.L

20020530 212.121.224/19 ALLOCATED PA
20050720 2001:4d10::/32

es.alvento
Alvento Soluciones S.A.

20060130 87.238.240/21 ALLOCATED PA

es.amena
AMENA

20040524 83.231/17 ALLOCATED PA
20001031 213.143.32/19 ALLOCATED PA

es.appser
Appser Data Engineering S.L.L.

20051216 87.238.88/21 ALLOCATED PA

es.arquired
Caja de Arquitectos

20021127 217.16.144/20 ALLOCATED PA

es.arrakis
Arrakis, Servicios y comunicaciones, S.L.

20040805 84.18.0/19 ALLOCATED PA
19970311 195.5.64/19 ALLOCATED PA
19980921 212.59.192/19 ALLOCATED PA

es.arsys
ARSYS INTERNET S.L.

20031222 82.223/16 ALLOCATED PA
20001128 217.76.128/20 ALLOCATED PA
20021007 217.76.144/20 ALLOCATED PA
20030326 2001:0ba0::/32

es.atlas
ATLAS IAP SL

20040727 83.138.40/21 ALLOCATED PA

es.auna
Auna Operadores de Telecomunicaciones, S.A.

20011031 62.100.96/19 ALLOCATED PA
20030611 80.173/16 ALLOCATED PA
20040705 80.174/16 ALLOCATED PA

es.bankinter
Bankinter S.A. (closed)

es.basa
BANDA ANCHA SA

20050621 85.239.192/19 ALLOCATED PA

es.bitmailer
BITMAILER

19961008 195.16.128/19 ALLOCATED PA

es.boe
Boletin Oficial del Estado

20020624 81.89.32/20 ALLOCATED PA

es.broadnet
Broadnet Europe Spain (closed)

es.bttel
BT ESPANA, COMPANIA DE SERVICIOS GLOBALES DE TELECOMUNICACIONES, SA

20030129 2001:0ac0::/32

es.cableazul
CableAZUL Comunicaciones (closed)

es.cablegalicia
R cable y telecomunicaciones

20040421 83.165/16 ALLOCATED PA
19990315 212.51.32/19 ALLOCATED PA
19990901 213.60/16 ALLOCATED PA

es.cablesur
Cablesur Comunicaciones S.A.

20051223 88.82.192/19 ALLOCATED PA

es.cabletelca
CABLETELCA, S.A.

20041105 85.155/16 ALLOCATED PA
19990923 212.40.224/19 ALLOCATED PA
20020220 213.231.64/18 ALLOCATED PA

es.caib
Govern de les Illes Balears

20050623 85.119.192/21 ALLOCATED PA

es.cajamadrid
Caja Madrid

20010517 213.164.160/19 ALLOCATED PA

es.capmad
Capcom International

20000918 217.18.32/20 ALLOCATED PA

es.cast-info
Cast-Info S.A. (closed)

es.castinfo
Cast-Info S.A.

20001120 217.70.0/20 ALLOCATED PA

es.ceca
CECA

20010523 80.68.128/20 ALLOCATED PA

es.centro
Centro Telematico Avanzado S.A. (closed)

es.cesatel
Soluziona Consultoria y Tecnologia

19951122 194.140.64/19 ALLOCATED PA

es.cesca
Centre de Supercomputacio de Catalunya (CESCA)

20040402 84.88/15 ALLOCATED PA
20040723 2001:40b0::/32

es.cesga
Centro de Supercomputacion de Galicia (CESGA)

20040915 84.21.160/19 ALLOCATED PA

es.claranet
Claranet S.A.U.

20010521 80.67.96/20 ALLOCATED PA

es.colt
COLT Telecom Spain

es.complethost
Complethost Soluciones Internet (closed)

es.concert
Communications Networking Services

19980827 212.21.192/19 ALLOCATED PA
19980903 212.31.192/19 ALLOCATED PA
19980529 212.41.128/19 ALLOCATED PA
19980803 212.49.128/19 ALLOCATED PA
19990212 212.49.160/19 ALLOCATED PA
19981005 212.108.0/19 ALLOCATED PA
19990503 212.163/17 ALLOCATED PA
20000404 212.163.128/17 ALLOCATED PA
20010112 213.9.128/17 ALLOCATED PA
19990920 213.194/18 ALLOCATED PA
20010223 213.236.64/18 ALLOCATED PA

es.conet
Mondragon Conet

20031014 217.76.240/20 ALLOCATED PA

es.corpme
Colegio de Registradores de la Propiedad y Mercantiles de Espana

20020917 217.114.128/20 ALLOCATED PA

es.cra
Caja Rural Intermediterranea, Sociedad Cooperativa de Credito

20000717 62.201/19 ALLOCATED PA

es.ctc
Cable i TV. de Catalunya (CTC)

20001013 62.57/16 ALLOCATED PA
20021209 81.184/16 ALLOCATED PA
19981202 212.78.128/19 ALLOCATED PA

es.ctele
Catalana de Telecomunicacions Societat Operadora de Xarxes,SA

19990309 212.31.32/19 ALLOCATED PA
20020919 213.151.96/19 ALLOCATED PA
20050509 2001:4c60::/32

es.ctv
Wanadoo Spain S.L.

19980527 212.25.128/19 ALLOCATED PA

es.datadeconline
Datadec Online, S.A.

20040413 217.145.176/20 ALLOCATED PA

es.datagrama
SERTRAM NETWORKS, S.L. (DATAGRAMA)

19980731 212.9.64/19 ALLOCATED PA
20021113 213.179.96/19 ALLOCATED PA

es.denetdesign
Denet C.B. (closed)

es.deutschebank
Deutsche Bank SAE (closed)

es.digitalvalue
Digital Value

20040213 83.147/18 ALLOCATED PA
20021128 217.13.80/20 ALLOCATED PA

es.dinahosting
DinaHosting S.L.

20031208 82.98.128/18 ALLOCATED PA

es.domyhost
DomyHost, S.L. (closed)

es.domyhostsl
DomyHost, S.L.

es.dragonet
Dragonet Comunicaciones

20030801 217.70.240/20 ALLOCATED PA

es.dti2
Desarrollo de la Tecnologma de las Comunicaciones

20020318 81.24.160/20 ALLOCATED PA

es.eanet
Internet Networks Eanet, S.L. (closed)

es.easynet
Easynet Espania, SA

20020221 62.93.160/19 ALLOCATED PA
20040902 84.20/19 ALLOCATED PA
20000111 213.139.0/19 ALLOCATED PA

es.eltec
T-Systems Eltec S.A.

20031222 217.14.32/20 ALLOCATED PA

es.encomix
Redestel Networks S.L.

19960415 194.143.192/19 ALLOCATED PA
19970425 195.114.192/19 ALLOCATED PA
19990917 213.220/18 ALLOCATED PA

es.eresmas
EresMas S.A.

es.es-zertia
ZERTIA TELECOMUNICACIONES S.L.

es.eunet
* EUnet ES/ Goya Servicios Telematicos, S.A. (closed)

es.eurociber
Grupo Eurociber, S.A.

19970924 62.164/17 ALLOCATED PA
19930901 193.127/16 ALLOCATED PA

es.euskaltel
Euskaltel

20010618 62.99/17 ALLOCATED PA
20030717 82.130.128/17 ALLOCATED PA
20040322 83.213/16 ALLOCATED PA
20041022 85.84/14 ALLOCATED PA
19990702 212.8.64/18 ALLOCATED PA
19980403 212.55/19 ALLOCATED PA
20000818 212.142.128/17 ALLOCATED PA

es.express
Internet Xpress (closed)

es.f-integra
Fundacion Integra

20050202 80.73.144/20 ALLOCATED PA

es.fcr
Xarxa Cinet, S.A.

19950607 194.140.128/19 ALLOCATED PA
19960110 194.140.160/19 ALLOCATED PA

es.filnet
Filnet, Serveis i comunicacions, SL

20010309 217.149.0/20 ALLOCATED PA

es.firstmark
Iberbanda S.A.

20031117 82.198.96/19 ALLOCATED PA
20040524 83.230.128/17 ALLOCATED PA
20050920 87.111/16 ALLOCATED PA
20000818 217.11.96/20 ALLOCATED PA
20011213 217.11.112/20 ALLOCATED PA

es.flag
FLAG Telecom Ireland Limited

20010720 80.81.64/20 ALLOCATED PA

es.flash10
Flash10 S.A.U (closed)

es.gedas
gedas Iberia, S.A.

20021106 217.10.80/20 ALLOCATED PA

es.gencat
Centre Telecos i TI Generalitat de Catalunya

20040519 83.247.128/17 ALLOCATED PA

es.genetsis
Genetsis Internet Partners

20030603 82.144.96/19 ALLOCATED PA

es.global-internet
KPG Communications S.L.

20030428 217.26.240/20 ALLOCATED PA

es.globecast
Globecast Spain

20010810 80.84.128/20 ALLOCATED PA
20030123 80.84.144/20 ALLOCATED PA

es.gobcantabria
Gobierno de Cantabria (closed)

es.goipcom
4GOIP NEtWORK SOLUTIONS S.C.P (closed)

es.grn
GRN Serveis Telematics SL

20010510 80.64.32/20 ALLOCATED PA

es.grupalia
Grupalia Internet S.A.

19990816 212.4.96/19 ALLOCATED PA

es.gts
Global TeleSystems

20000502 213.145.192/19 ALLOCATED PA

es.hnet
BCN Servicios Telematicos

es.honte
Honte Communications (closed)

es.hostalia
Hostalia Internet S.L.

20031017 82.194.64/19 ALLOCATED PA

es.iasoft
IA Soft Aragon, S.L.

20011211 80.253.64/20 ALLOCATED PA

es.iber-x
Iber Band Exchange, S.A. (Iber-X)

20040323 83.150.192/18 ALLOCATED PA
20020904 213.190.0/19 ALLOCATED PA
20051020 2001:4d90::/32

es.ibercaja
Ibercaja

20020902 81.95.64/20 ALLOCATED PA

es.ibercom
WWW Ibercom SL

20000425 213.194.128/18 ALLOCATED PA
20001101 213.195.64/18 ALLOCATED PA

es.iberdrola
Grupo Iberdrola S.A.

20001002 217.22.96/20 ALLOCATED PA

es.ibermatica
Ibermatica, S.A

es.ibernet
IBERNET Telematica

20020730 81.92.128/20 ALLOCATED PA

es.ic2
Multicaixa, S.A.

20021204 217.16.240/20 ALLOCATED PA

es.ictnet
Institut Catal` de Tecnologia (closed)

es.idecnet
IdecNet S.L.

19990707 212.64.160/19 ALLOCATED PA

es.idh
Telvent Housing, S.A.

20060117 88.84.64/19 ALLOCATED PA
20000905 217.15.32/20 ALLOCATED PA
20040615 217.149.144/20 ALLOCATED PA

es.iese
IESE

20051116 87.237.144/21 ALLOCATED PA

es.ignite
BT Ignite Content Hosting Limited

20010305 217.140.16/20 ALLOCATED PA

es.ilimit
Ilimit Comunicacions S.L.

20010927 80.94/20 ALLOCATED PA

es.iminet
Institut Municipal d’Informatica (IMI)

19991014 212.15.224/19 ALLOCATED PA

es.infase
Inter.net Spain

19990517 212.87.192/19 ALLOCATED PA

es.infoglobal
Infoglobal S.A.

20030212 213.167.224/19 ALLOCATED PA

es.infornet
Infornet

19991130 212.115.96/19 ALLOCATED PA

es.infortelecom
Infortelecom Systems S.L.

20041020 84.246.208/21 ALLOCATED PA

es.integra
INTEGRA (closed)

es.intelideas
Intelideas

20001228 217.75.224/20 ALLOCATED PA
20021009 217.75.240/20 ALLOCATED PA
20030224 2001:0b38::/32

es.interbook
VIA NET.WORKS ESPANA, S.L.

19990916 213.236/19 ALLOCATED PA

es.intercom
BT Espana Integracion General de Sistemas, S.L.U.

19990714 212.66.160/19 ALLOCATED PA

es.intercomgi
Intercom Telematica Girona, S.L.

20050929 87.236.240/21 ALLOCATED PA

es.interdigital
INTERDIGITAL CORPORACION TECNOLOGICA S.L.

20050711 85.31.128/21 ALLOCATED PA

es.interdominios
grupo interdominios s.a. (closed)

es.interec
Interec

20020130 81.19.160/20 ALLOCATED PA

es.interhost
Servicios de Hosting en Internet S.A.

20001016 213.134.32/19 ALLOCATED PA
20030317 2001:0b90::/32

es.interlink
INTERLINK

20010829 80.88.224/20 ALLOCATED PA

es.intrasat
Intrasat Telecomunicaciones S.A.

es.inycom
Instrumentacion y Componentes, SA

19990728 212.75.160/19 ALLOCATED PA

es.ipcom
Comunitel Global S.A.

20050712 87.235/16 ALLOCATED PA
19990329 212.145.0/16 ALLOCATED PA
20010119 217.130/16 ALLOCATED PA
20050817 2001:4d28::/32

es.ipf
IPF.NET (closed)

es.iporium
IPORIUM NETWORKS S.L.

20040526 80.66.112/20 ALLOCATED PA
20040629 2001:4030::/32

es.islaweb
IslaWEB, S.L.

20011120 80.249.32/20 ALLOCATED PA

es.istec
IST TECNOLOGIAS, S.A.

es.itces
IT&C Enterprise Solutions

20000126 213.211/19 ALLOCATED PA

es.izfe
IZFE SA

20040127 82.116.160/19 ALLOCATED PA

es.jazztel
Jazz Telecom S.A.

19991202 62.14/16 ALLOCATED PA
20000720 62.15/16 ALLOCATED PA
20050607 87.216/13 ALLOCATED PA
19990507 212.106.192/19 ALLOCATED PA
20000609 212.106.224/19 ALLOCATED PA

es.jcyl
Junta de Castilla y Leon

20030806 217.71.16/20 ALLOCATED PA

es.jet
Jet Enlaces Telematicos S.L.

es.jjaa
Sociedad Andaluza para el Desarrollo de la Sociedad de la Informacion, S.A.U.

20041130 217.12.16/20 ALLOCATED PA

es.kaos
KAOS redes IP

20031126 217.113.240/20 ALLOCATED PA

es.knet
Knet Comunicaciones, S.L.

20031128 82.199.32/19 ALLOCATED PA

es.lacaixa
Caixa d’Estalvis i Pensions, La Caixa

20010306 217.148.64/20 ALLOCATED PA

es.lambdanet
Lambdanet Espana S.A. (closed)

es.lantik
Lantik S.A.

20011105 80.245/20 ALLOCATED PA

es.llerena
DAVID LLERENA (closed)

es.logiccontrol
Logic Control, S.A.

20001027 217.31.32/20 ALLOCATED PA

es.looptelecom
Loop Telecom S.A. (closed)

es.madritel
Madritel

20031202 82.158/15 ALLOCATED PA
19991210 213.37/16 ALLOCATED PA

es.mediafusion
MEDIAFUSION ESPANA, S.A.

20050113 85.158.168/21 ALLOCATED PA

es.medtelecom
MED TELECOM, S.A.

20000727 62.117.128/19 ALLOCATED PA
20001031 62.117.160/19 ALLOCATED PA
20001031 62.117.192/18 ALLOCATED PA

es.medusa
Fujitsu Espana Services, S.A.

19951117 194.140.0/19 ALLOCATED PA
19960710 194.140.32/19 ALLOCATED PA
20040910 2001:4108::/32

es.minorisa
Minorisa de Sistemas Informaticos i de Gestion

20040622 217.150.208/20 ALLOCATED PA

es.munditelecom
Priority Telecom, S.A.

20000914 212.230/15 ALLOCATED PA

es.mundivia
Mundivia S.A.

20020118 62.13.224/19 ALLOCATED PA

es.myalert
MyAlert.COM S.A.

20010129 217.115.0/20 ALLOCATED PA

es.n2000
Neptuno 2000 Servicios en Red S.L.U.

20050330 80.80.80/20 ALLOCATED PA

es.netfactory
Endesa Net Factory S.L

20020315 62.85.192/18 ALLOCATED PA

es.nexica
NEXICA

19990602 212.92.32/19 ALLOCATED PA
20021129 217.13.112/20 ALLOCATED PA

es.nova
Nova Internet

19990623 212.85.32/19 ALLOCATED PA

es.ochoa
Transportes Ochoa, S.A.

20051215 80.255.112/20 ALLOCATED PA

es.ola
Ola internet (closed)

es.onenet
OneNet S.L.

19990824 213.52/17 ALLOCATED PA

es.ono
ONO

20000503 62.42/16 ALLOCATED PA
20001106 62.43/16 ALLOCATED PA
20021112 81.202/15 ALLOCATED PA
20040415 84.120/13 ALLOCATED PA
19990519 212.95.192/19 ALLOCATED PA
19991117 212.122.96/19 ALLOCATED PA
19991122 213.201/17 ALLOCATED PA

es.orion-network
Orion Network, S.A.L.

es.ows
OWS

20001122 217.71.192/20 ALLOCATED PA

es.palmanet
Palmanet Networking Services, S.L.L.

es.primus
PRIMUS TELECOMMUNICATIONS IBERICA, S.A.

es.princast
Gobierno del Principado de Asturias

20060207 88.151.16/21 ALLOCATED PA

es.prodigios
Prodigios Interactivos, S.A.

20011120 62.221.64/18 ALLOCATED PA
20000917 213.231.128/18 ALLOCATED PA

es.proel
Proel, Promotora de Ediciones Electronicas S.A. (closed)

es.prored
Prored Comunicaciones, S.L.

20040331 83.136.184/21 ALLOCATED PA

es.protel
Promocion y Planificacion Hotelera S.A

20011031 80.243.224/20 ALLOCATED PA

es.psinet
PSINet-Europe, Inc. (closed)

20001215 213.168.32/19 ALLOCATED PA

es.ran
Ran Internet

19980511 212.34.128/19 ALLOCATED PA

es.rapidsite
RapidSite Espana

20010205 217.116.0/20 ALLOCATED PA
20030508 217.116.16/20 ALLOCATED PA

es.readysoft
Ready Soft (closed)

es.recoletos
Recoletos Compania Editorial

19981120 212.80.128/19 ALLOCATED PA

es.redbus
Redbus Interhouse Plc. (closed)

es.redestb
RedesTB (closed)

es.rediris
Departamento RedIRIS, Entidad publica empresarial RED.ES

19940802 193.144/15 ALLOCATED PA
19940802 193.146/16 ALLOCATED PA
19960202 193.147/16 ALLOCATED PA
19981028 212.128.0/16 ALLOCATED PA
20010521 2001:0720::/35
20020709 2001:0720:2000::/35
20020709 2001:0720:4000::/34
20020709 2001:0720:8000::/33

es.renfe
RENFE

20001031 213.144.32/19 ALLOCATED PA

es.retecal
RETECAL Sociedad Operadora de Telecomunicaciones de Castilla y Leon

20030114 81.172.0/17 ALLOCATED PA
19990225 212.22.32/19 ALLOCATED PA
20000816 212.183.192/18 ALLOCATED PA
20010510 213.254.64/18 ALLOCATED PA

es.retelecom
RED ELECTRICA TELECOMUNICACIONES

20011205 80.251.64/20 ALLOCATED PA
20040322 217.173.112/20 ALLOCATED PA

es.retena
Tenaria S.A.

20031029 82.213.128/18 ALLOCATED PA
20040511 83.173.128/18 ALLOCATED PA
20050131 85.219/17 ALLOCATED PA
19991018 212.21.224/19 ALLOCATED PA

es.retevision
Retevision S.A.

19980330 62.81/16 ALLOCATED PA
19990504 62.82/16 ALLOCATED PA
20000211 62.83/16 ALLOCATED PA
20000822 62.174/15 ALLOCATED PA
20010928 80.224/16 ALLOCATED PA
20021212 81.60/15 ALLOCATED PA
20060213 89.140/15 ALLOCATED PA
19991005 194.106.0/19 ALLOCATED PA
19991005 194.149.192/19 ALLOCATED PA

es.sarenet
SAREnet, S.A.

19960122 194.30.0/17 ALLOCATED PA
20000410 212.81.128/17 ALLOCATED PA

es.satec
SATEC, S.A.

20001205 213.164.32/19 ALLOCATED PA

es.serval
SERVICOM2000 (closed)

es.servicom
Servicom S.A (closed)

es.servicom2000
SERVICOM2000

20000726 62.97.128/19 ALLOCATED PA
19990205 212.101.64/19 ALLOCATED PA

es.servihosting
ServiHosting Networks S.L.

20040601 84.232.0/17 ALLOCATED PA
20060112 88.148/17 ALLOCATED PA

es.servytec
SERVYTEC NETWORKS, S.L. (closed)

es.siapi
SIAPI NETWORKS

20000919 217.18.160/20 ALLOCATED PA

es.skypoint
SkyPoint S.A. (closed)

es.supercable
supercable

20041103 85.136/15 ALLOCATED PA
19981211 212.79.128/19 ALLOCATED PA
20000120 213.227/18 ALLOCATED PA
20010402 217.216/15 ALLOCATED PA

es.sweb
sw hosting & communications technologies SL

es.sysme
sysme networks

es.tclm
Telecom Castilla La Mancha

20030917 82.86/15 ALLOCATED PA

es.tdatacorp
Telefonica International Wholesale Services, SL

20040625 84.16.0/19 ALLOCATED PA
20001026 213.140.32/19 ALLOCATED PA
20030623 2001:1498::/32

es.telecable
Sociedad Promotora de las Telecomunicaciones en Asturias -Telecable

20020308 81.9.128/17 ALLOCATED PA
20031219 83.97.128/17 ALLOCATED PA
20041020 85.152/16 ALLOCATED PA
19981105 212.89.0/19 ALLOCATED PA
20001030 213.141.32/19 ALLOCATED PA

es.teleconnect
Teleconnect Comunicaciones, S.A. (closed)

es.telefonica
TELEFONICA DE ESPANA

20010709 80.24/15 ALLOCATED PA
20011112 80.32/13 ALLOCATED PA
20010613 80.58/15 ALLOCATED PA
20020215 81.32/12 ALLOCATED PA
20031202 83.32/12 ALLOCATED PA
20041007 83.48/12 ALLOCATED PA
20050713 88/11 ALLOCATED PA
20000301 213.96/15 ALLOCATED PA
20000517 213.98/16 ALLOCATED PA
20010307 217.125/16 ALLOCATED PA
20010307 217.126/15 ALLOCATED PA
20021108 2001:09d8::/32

es.telepolis
IP Multimedia S.L.

20000211 213.149.128/19 ALLOCATED PA

es.teleservei
TELESERVEI SPAIN S.L.U. (closed)

es.terremark
NAP de Las Americas-Madrid, S.A.

20050114 85.112/19 ALLOCATED PA

es.tiscali
Tiscali Telecommunications S.A

20011130 81/18 ALLOCATED PA
20031030 82.213.192/18 ALLOCATED PA
19990302 212.7.32/19 ALLOCATED PA
19990820 212.14.96/19 ALLOCATED PA
20000809 212.166.64/19 ALLOCATED PA
20000525 213.94/18 ALLOCATED PA
20010221 213.129.160/19 ALLOCATED PA

es.tmdigital
TM Digital Granada S.L.

es.total
Total Networking S.L. (closed)

es.ttd
TELEFONICA DATA ESPANA

20010709 80.26/15 ALLOCATED PA
20010709 80.28/14 ALLOCATED PA
19971120 193.152/15 ALLOCATED PA
19961204 194.69.224/19 ALLOCATED PI
19951020 194.179.0/17 ALLOCATED PA
19951222 194.224/16 ALLOCATED PA
19961219 195.53/16 ALLOCATED PA
19961219 195.55/16 ALLOCATED PA
19961219 195.57/16 ALLOCATED PA
19960610 195.76/16 ALLOCATED PA
19961202 195.77/16 ALLOCATED PA
19971208 195.235/16 ALLOCATED PA
19990225 212.170/16 ALLOCATED PA
19990527 213/16 ALLOCATED PA
19990809 213.4/16 ALLOCATED PA
20000517 213.99/16 ALLOCATED PA
20010307 217.124/16 ALLOCATED PA
20020705 2001:0800::/32

es.tusprofesionales
TusProfesionales, SL

20050707 86.109.160/19 ALLOCATED PA

es.uned
Universidad Nacional de Educacisn a Distancia – UNED

20000630 62.204.192/19 ALLOCATED PA

es.uni2
Uni2 – Lince telecomunicaciones

19990618 62.36/16 ALLOCATED PA
20000103 62.37/16 ALLOCATED PA
20010717 80.102/15 ALLOCATED PA
20040907 85.48/12 ALLOCATED PA

es.unib
TELIA IBERIA (closed)

es.unired
JR & JS Engenieria y Comercio

19990819 212.44.96/19 ALLOCATED PA

es.uniway
Uniway Technologies SL

20050518 85.118.240/21 ALLOCATED PA

es.uoc
Universitat Oberta de Catalunya

20000830 213.73.32/19 ALLOCATED PA

es.uunet
UUNET SPAIN

19990629 62.22.0/19 ALLOCATED PA
20000117 62.22.32/19 ALLOCATED PA
20000117 62.22.64/18 ALLOCATED PA
20010208 62.22.128/17 ALLOCATED PA

es.veloxia
Veloxia Network, S.L.

20030124 213.149.224/19 ALLOCATED PA

es.verio
Verio Spain SRL

20020128 81.19.96/20 ALLOCATED PA

es.victelehome
VIC Telehome, S.L.

20010221 213.128.160/19 ALLOCATED PA

es.vol
Yes Sistemas Informaticos S.L.

19951205 194.176.96/19 ALLOCATED PA

es.wipzona
Wipzona Network, S.L.

20050926 80.244.48/20 ALLOCATED PA

es.xfera
XFERA Moviles S.A.

20010320 217.168.0/20 ALLOCATED PA

es.xpress
Internet Xpress

19991129 212.111.96/19 ALLOCATED PA

es.xtec
Xarxa Telematica Educativa de Catalunya

20030912 82.151.192/19 ALLOCATED PA
20041215 85.192.64/18 ALLOCATED PA
20010620 213.176.160/19 ALLOCATED PA
20021217 2001:0a50::/32

es.xuntadegalicia
Xunta de Galicia

20041117 85.91.64/19 ALLOCATED PA

es.yacom
Ya.com Internet Factory

20001121 62.151/16 ALLOCATED PA
20040423 84.76/14 ALLOCATED PA
20060117 89.128/14 ALLOCATED PA

es.zz
* Last Resort Internet Registry for Spain (closed)