Data as of Nov 9, 2026

217.117.208.0/20

No anonymizer space · no proxy exits in 30 days

O2 Czech Republic, a.s.

Announcement
this exact prefix
RPKI valid
Announced by
Type
Residential
92% of it

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
217.117.208.0/204,096CZ-CZNET-20040202O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZALLOCATED PANov 14, 2017abuse@o2.cz
└ 217.117.212.0/24256LOSAN-NETLOSAN internet s.r.o.ASSIGNED PAMar 8, 2009abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.213.0/24256LOSAN-NETLOSAN internet s.r.o.ASSIGNED PAMar 30, 2010abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.214.0/24256LOSAN-NETLOSAN internet s.r.o.ASSIGNED PAMay 25, 2009abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.215.0/24256INTEKINTEK.CZ, s.r.o., ISP in ChomutovASSIGNED PADec 13, 2004abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.216.0/24256LOSAN-NETInternethome, s.r.o.ASSIGNED PAJan 13, 2005abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.0/25128LOSAN-NETLOSAN internet s.r.o.ASSIGNED PAMar 30, 2010abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.128/298OXID-NetworkISP provider in Velké BíloviceASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.136/298INTEKINTEK.CZ, s.r.o., ISP in ChomutovASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.152/298freeIP range unusedASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.160/298PERSONNACZPersonna International CZ, s.r.o.ASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.168/298IK-NETIK-NET s.r.o., ISP in JirkovASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.176/298freeIP range unusedASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.184/298JALINETJALInet s.r.o., ISP in D??ínASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.200/298LOSAN-NETLOSAN internet s.r.o.ASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.232/298LOSAN-NETKV teplarnaASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.217.248/298SCVKCZSeveroceske vodovody a kanalizace, a.s.ASSIGNED PAJan 22, 2012abuse@o2.cz
via CZ-CZNET-20040202
└ 217.117.218.128/25128LOSAN-NETLOSAN internet s.r.o.ASSIGNED PAMar 30, 2010abuse@o2.cz
via CZ-CZNET-20040202

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
Residential3,76092%7
Business3368.2%12

Network & registry

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