Data as of Nov 8, 2026
212.4.142.0/24
5 residential-proxy exits · 30 daysSATT a.s. · space held by O2 Czech Republic, a.s.
Residential-proxy exits
Proxy exits
5
2.0% of its addresses · 30 days
Always-on exits
2
40% of its exits
Providers
38
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
2.3K observations
Proxy providers listing exits
- 2Captcha
- 711Proxy
- Ake.net
- AnyIP
- BirdProxies
- BottingTools
- Bright Data
- ByteProxies
- Byteful
- CliProxy
- DataImpulse
- Decodo
- EnigmaProxy
- FastProxy
- FlashProxy
- GonzoProxy
- IPOasis
- Infatica
- LemonBright
- MangoProxy
- NodeMaven
- NovaProxy
- Novada
- Oxylabs
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyHat
- ProxyRack
- ProxyWing
- Proxyma
- Shifter
- SwiftProxy
- Thordata
- ThunderProxy
- VantageProxies
- VitalExclusive
- Webshare
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 212.4.128.0/19 since Oct 2016 | AS12570 | Residential | 88 13 always on | O2 Czech Republic, a.s. |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 212.4.128.0/19 | 8,192 | CZ-CZNET-20080611 | O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZ | ALLOCATED PA | Jun 11, 2008 | abuse@ |
| └ 212.4.142.0/23 | 512 | SATTNET | SATT a.s. | ASSIGNED PA | Jan 12, 2009 | abuse@ via CZ-CZNET-20080611 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 212.4.142.0/23
- Prefix
- 212.4.142.0/23
- Announced by
- AS56566 SATT a.s.
- Type
- Residential
- Proxy exits
- 9
- Always-on exits
- 2
- RPKI
- RPKI valid
- Netname
- SATTNET
- Registrant
- SATT a.s.
- RIR
- RIPE NCC
Registry
Holder
- Organization
- O2 Czech Republic, a.s.
- Handle
- ORG-STAN1-RIPE
- Range
- 212.
4. 128. 0/ 19 - Registration type
- ALLOCATED PA
- Record created
- Jun 11, 2008
Origin network
AS56566
CZ
- Name
- SATT a.s.
- Type
- Internet provider
- Registered
- Mar 21, 2011
- Domain
- satt.cz
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
212.4.142.0/23
Routing history
- Pattern
- Stable
- First seen
- Jun 2024
- Current origin since
- Jun 2025 · 1.4 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 212.4.142.0/23 | AS56566 | /23 | RIPE | RPKI valid |
| 212.4.128.0/19 | AS12570 | /19 | RIPE | Another network |
IRR
Route objects on 212.4.142.0/23
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS56566 | RIPE | MNET-IP-MNT | Nov 7, 2023 |
Whois
Registration for this announcement
- Range
- 212.
4. 142. 0/ 23 - Netname
- SATTNET
- Registrant
- SATT a.s.
- Registrant country
- CZ
- Organization
- SATT a.s.
- Org country
- CZ
- Type
- ASSIGNED PA
- Created
- Jan 12, 2009
- Updated
- Jan 12, 2009
- Maintainer
- MNET-IP-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Jun 11, 2008
- Status
- assigned
Report abuse
Abuse contact
- abuse@
o2. cz - Name
- Abuse-C Role
- Handle
- AR14410-RIPE