Data as of Nov 7, 2026
81.90.170.0/24
4 residential-proxy exits · 30 daysO2 Czech Republic, a.s.
Residential-proxy exits
Proxy exits
4
1.6% of its addresses · 30 days
Always-on exits
1
25% of its exits
Providers
26
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
593 observations
Proxy providers listing exits
- AnyIP
- BirdProxies
- BottingTools
- Byteful
- Decodo
- EnigmaProxy
- GSocks
- Geonix
- Geonode
- GonzoProxy
- Infatica
- MangoProxy
- NodeProxy
- NovaProxy
- Oxylabs
- Proxy-Seller
- ProxyEmpire
- ProxyGeo
- Proxyma
- Shifter
- StrikeProxy
- Thordata
- ThunderProxy
- VantageProxies
- VitalExclusive
- Webshare
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 81.90.168.0/21 since Aug 2025 | AS5610 | Residential | 46 6 always on | O2 Czech Republic, a.s. | |
| 81.90.160.0/20 since Nov 2016 | AS5610 | Residential | 46 6 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.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 81.90.160.0/20 | 4,096 | CZ-CZNET-20020704 | O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZ | ALLOCATED PA | Nov 14, 2017 | abuse@ |
| └ 81.90.170.0/26 | 64 | ELSATNET-CZ | Elsat spol. s r.o. | ASSIGNED PA | Apr 26, 2005 | abuse@ via CZ-CZNET-20020704 |
| └ 81.90.170.64/26 | 64 | ELSATNET-CZ | Elsat spol. s r.o. | ASSIGNED PA | Nov 21, 2005 | abuse@ 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
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 128 | 50% | 2 | |
| Residential | 128 | 50% | 1 |
Network & registry
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2016
- Current origin since
- Jun 2016 · 10 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 81.90.170.0/24 | AS5610 | /24 | RIPE | RPKI valid |
| 81.90.168.0/21 | AS5610 | /21 | RIPE | Too specific |
| 81.90.160.0/20 | AS5610 | /20 | RIPE | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS5610 | RIPE | ELSAT, s.r.o. (InternetHome prefix) | AS5610-MTN | Apr 24, 2017 |
Whois
Registration for this announcement
- Range
- 81.
90. 160. 0/ 20 - Netname
- CZ-CZNET-20020704
- Registrant
- O2 Czech Republic, a.s.
- Registrant country
- CZ
- Organization
- O2 Czech Republic, a.s. (ORG-STAN1-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- Nov 14, 2017
- Updated
- Dec 18, 2018
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Jul 4, 2002
- Status
- assigned
Report abuse
Abuse contact
- abuse@
o2. cz - Name
- Abuse-C Role
- Handle
- AR14410-RIPE