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Data as of Nov 8, 2026

81.90.160.0/20

47 residential-proxy exits · 30 days

O2 Czech Republic, a.s.

Announcement
this exact prefix
RPKI valid
Announced by
AS5610
Type
Residential
84% of it

Residential-proxy exits

Proxy exits
47
1.1% of its addresses · 30 days
Always-on exits
6
13% of its exits
Spread
3 of 16
/24s with at least one exit
Providers
53
selling exits here
Oct 9, 2026 – Nov 7, 2026

Exits seen per day

5.0K observations
  • Residential
  • Business

/24s with the most always-on exits

/24Always-on exitsProxy exits
81.90.173.0/24430
81.90.168.0/24113
81.90.170.0/2414

Proxy providers listing exits

  • 2Captcha
  • Ake.net
  • AnyIP
  • BartProxies
  • BirdProxies
  • BottingTools
  • ByteProxies
  • Byteful
  • CliProxy
  • Decodo
  • EnigmaProxy
  • FROXY
  • FastProxy
  • FlashProxy
  • GSocks
  • Geonix
  • Geonode
  • GloryCloud
  • GonzoProxy
  • HydraProxy
  • IPFly
  • IPOasis
  • Infatica
  • LemonBright
  • LemonLabs
  • LightningProxies
  • MangoProxy
  • NodeMaven
  • NodeProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • Proxiware
  • Proxy-Seller
  • ProxyEmpire
  • ProxyGeo
  • ProxyHat
  • ProxyStyler
  • ProxyWing
  • Proxyma
  • RainProxy
  • RapidProxy
  • Shifter
  • StrikeProxy
  • Thordata
  • ThunderProxy
  • VantageProxies
  • VibeProxies
  • VitalData
  • VitalExclusive
  • VitalProxy
  • Webshare
  • ZENPROXY_PREMIUM

Announcements

More specific

Announcements inside

PrefixOriginTypeProxy exitsHolderRPKI
81.90.168.0/21
since Aug 2025
AS5610Residential47
6 always on
O2 Czech Republic, a.s.
81.90.168.0/24
since Jun 2016
AS5610Residential13
1 always on
O2 Czech Republic, a.s.
81.90.170.0/24
since Jun 2016
AS5610Residential4
1 always on
O2 Czech Republic, a.s.
81.90.173.0/24
since Jun 2016
AS5610Residential30
4 always on
O2 Czech Republic, a.s.

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
81.90.160.0/204,096CZ-CZNET-20020704O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZALLOCATED PANov 14, 2017abuse@o2.cz
└ 81.90.160.0 - 81.90.164.2551,280CZ-TERMSNETTERMSnetASSIGNED PAJan 8, 2003abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.0/298CZ-KNIZEKJiri Knizek - PC SERVIS PCKBASSIGNED PAMar 29, 2004abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.8/298TRHOVESVINY-CZMesto Trhove SvinyASSIGNED PADec 5, 2006abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.16/2816ABACUS-CZABACUS-COMPUTER networkASSIGNED PAMay 16, 2003abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.32/298CZ-BESEDNICEMestys BesedniceASSIGNED PAMay 12, 2011abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.40/298CZ-PORTLOGISTICSPORT LOGISTICS s.r.o.ASSIGNED PAJun 10, 2011abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.48/2816CZ-PROLUXPROLUX Consulting Int. s.r.o.ASSIGNED PAOct 10, 2005abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.64/298CZ-ALIMPEKALIMPEK spol. s r.o.ASSIGNED PANov 26, 2010abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.72/298CZ-SCHWANCOSMETICSSchwan Cosmetics CR s.r.o.ASSIGNED PAJun 25, 2003abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.80/298CZ-SETERMSETERM CB a.s.ASSIGNED PAJan 18, 2007abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.88/298CZ-TOPTRANSCBTOPTRANS Ceske BudejoviceASSIGNED PAJan 30, 2007abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.96/2732CZ-BELLCOMBellcom TelecomunicationASSIGNED PASep 2, 2003abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.128/298CZ-TTATeplarna Tabor a.s.ASSIGNED PAFeb 22, 2007abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.136/298CZ-ZCJHZahradni centrum Jindrichuv HradecASSIGNED PASep 25, 2007abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.144/298CZ-SSOCBStredni skola obchodniASSIGNED PAFeb 8, 2006abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.152/298CZ-ZAMBELLIZambelli-technik, spol. s r.o.ASSIGNED PADec 16, 2008abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.160/298CZ-SKOLACBSoukroma stredni a jazykova skola s pravem statni jazykove zkousky CB s.r.o.ASSIGNED PAJun 11, 2011abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.168/298CZ-JVSJihocesky vodarensky svazASSIGNED PANov 26, 2012abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.176/2816CZ-JOUZAJOUZA s.r.o.ASSIGNED PAMar 29, 2006abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.192/298CZ-SKYNET-AGRIOSkyNet infrastructure for AGRIOASSIGNED PAJan 4, 2011abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.200/298CZ-RMGASTRORM GASTRO CZ s.r.o.ASSIGNED PAApr 29, 2011abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.208/2816CZ-MMCOMPNETMartin Mazanec - MM-PERSONAL COMPUTERASSIGNED PAJul 20, 2007abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.224/298CZ-INFRAZETINFRAZET a.s.ASSIGNED PAOct 18, 2010abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.232/298CZ-KVANTANETKvantaNet s.r.o.ASSIGNED PASep 29, 2010abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.240/298CZ-GENTLEYGENTLEY a.s.ASSIGNED PAOct 18, 2010abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.165.248/298CZ-SPSTAStredni prumyslova skola strojni a stavebni TaborASSIGNED PAJun 21, 2010abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.166.0/24256CZ-TERMSNETTERMSnet - MANsASSIGNED PAApr 23, 2010abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.168.0/24256ELSATNET-CZElsat spol. s r.o.ASSIGNED PAMay 23, 2003abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.169.0/24256CZ-INTEM-NETIntem s.r.o.ASSIGNED PAJun 10, 2003abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.170.0/2664ELSATNET-CZElsat spol. s r.o.ASSIGNED PAApr 26, 2005abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.170.64/2664ELSATNET-CZElsat spol. s r.o.ASSIGNED PANov 21, 2005abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.171.0/24256CZ-VIMPERKNETHerbia s.r.o.ASSIGNED PAFeb 15, 2005abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.172.0/24256CZ-STRAZNYNETOS Strazny.NETASSIGNED PADec 4, 2008abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.173.0/25128ELSATNET-CZElsat spol. s r.o.ASSIGNED PAJun 14, 2004abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.173.128/2664ELSATNET-CZElsat spol. s r.o.ASSIGNED PANov 11, 2004abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.173.192/2664CZ-KNIZEKJiri Knizek - PC SERVIS PCKBASSIGNED PAJan 27, 2005abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.174.0/24256CZ-TERMSNETTERMSnet - P2P lines to customersASSIGNED PAMar 5, 2007abuse@o2.cz
via CZ-CZNET-20020704
└ 81.90.175.0/24256CZ-TERMSNETTERMSnetASSIGNED PAOct 7, 2004abuse@o2.cz
via CZ-CZNET-20020704

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

4,096 addresses
TypeAddressesShareRanges
Residential3,45684%7
Business64016%30

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS5610

CZ
Name
O2 Czech Republic, a.s.
Type
Internet provider
Registered
Apr 25, 1996
Domain
o2.cz
Website
www.o2.cz
Spamhaus ASN-DROP
not listed