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Data as of Nov 7, 2026

81.200.48.0/21

15 residential-proxy exits · 30 days

O2 Czech Republic, a.s.

Announcement
this exact prefix
RPKI valid
Announced by
AS41046
Type
Residential
78% of it

Residential-proxy exits

Proxy exits
15
0.73% of its addresses · 30 days
Always-on exits
1
6.7% of its exits
Spread
4 of 8
/24s with at least one exit
Providers
39
selling exits here
Oct 8, 2026 – Nov 6, 2026

Exits seen per day

7.5K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
81.200.53.0/2415
81.200.51.0/2405
81.200.54.0/2404
81.200.50.0/2401

Proxy providers listing exits

  • 2Captcha
  • 711Proxy
  • AnyIP
  • BirdProxies
  • BottingTools
  • ByteProxies
  • Byteful
  • CliProxy
  • Decodo
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • GSocks
  • Geonode
  • GonzoProxy
  • IPOasis
  • IPRoyal
  • Infatica
  • LemonBright
  • MangoProxy
  • NodeProxy
  • NovaProxy
  • Oxylabs
  • Proxy-Seller
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • Proxyma
  • RainProxy
  • Shifter
  • StrikeProxy
  • Thordata
  • ThunderProxy
  • VantageProxies
  • VibeProxies
  • VitalExclusive
  • VitalProxy
  • Webshare

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
81.200.48.0/20
since Sep 2006
AS41046Residential25
2 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
81.200.48.0/204,096CZ-CZNET-20060601O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZALLOCATED PAJun 1, 2006abuse@o2.cz
└ 81.200.48.0 - 81.200.48.9596NET-TVTRINEC-BACKBONEBKS Trinec - backbone serversASSIGNED PAMay 9, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.48.96 - 81.200.48.254159NET-TVTRINEC-NATBKS Trinec - NAT IPs for customersASSIGNED PAMay 9, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.49.0 - 81.200.49.254255NET-TVTRINEC-49CBKS Trinec - IPs for end customersASSIGNED PAMay 9, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.50.0/23512NET-TVTRINEC-C1Kabelova televize TrinecASSIGNED PAMar 28, 2007abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.52.0 - 81.200.52.9596NET-NEJTV-INTRAWEB2Intraweb servis ISPASSIGNED PAMay 9, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.52.96/2732NET-NEJTV-INTRAWEB5Intraweb servis ISPASSIGNED PAMay 9, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.52.128 - 81.200.52.22396NET-NEJTV-INTRAWEB3Intraweb servis ISPASSIGNED PAOct 10, 2014abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.52.224 - 81.200.52.25431NET-NEJTV-INTRAWEB4Intraweb servis ISPASSIGNED PAMay 9, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.53.0/24256NET-TVTRINEC-C3Kabelova televize Trinec (subscribers)ASSIGNED PAOct 1, 2009abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.54.128/2664NET-TVTRINEC-IW2Intraweb servis s.r.o.ASSIGNED PAOct 1, 2009abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.54.192/2664NET-TVTRINEC-IWIntraweb servis s.r.o.ASSIGNED PAJul 28, 2009abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.55.0/2732NET-BKS-PP1BKS infrastructure point to point linksASSIGNED PAApr 28, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.55.32 - 81.200.55.409NET-BKS-SITELBKS SitelASSIGNED PAApr 28, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.55.41 - 81.200.55.12787NET-BKS-PP2BKS infrastructure point to point linksASSIGNED PAApr 28, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.55.128/2732NET-BKS-37-BV-NATBKS Breclav NAT IPs for end-customersASSIGNED PAApr 28, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.55.160/2732NET-BKS-38-HB-NATBKS Havlickuv Brod NAT IPs for end-customersASSIGNED PAApr 28, 2010abuse@o2.cz
via CZ-CZNET-20060601
└ 81.200.55.224/2732NET-BKS-31-TA-NATBKS Tabor NAT IPs for end-customersASSIGNED PAApr 28, 2010abuse@o2.cz
via CZ-CZNET-20060601

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

2,048 addresses
TypeAddressesShareRanges
Residential1,60078%2
Business44822%9

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS41046

CZ
Name
O2 Czech Republic, a.s.
Type
Internet provider
Registered
Jun 6, 2006
Domain
o2.cz
Website
www.nej.cz
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed