Data as of Nov 7, 2026
81.25.16.0/21
9 residential-proxy exits · 30 daysCEZNET s.r.o.
Residential-proxy exits
Proxy exits
9
0.44% of its addresses · 30 days
Always-on exits
2
22% of its exits
Spread
5 of 8
/24s with at least one exit
Providers
51
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
12K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 81.25.22.0/24 | 1 | 3 | |
| 81.25.19.0/24 | 1 | 2 | |
| 81.25.20.0/24 | 0 | 2 | |
| 81.25.17.0/24 | 0 | 1 | |
| 81.25.18.0/24 | 0 | 1 |
Proxy providers listing exits
- 2Captcha
- 711Proxy
- AnyIP
- BirdProxies
- BlurPath
- BottingTools
- ByteProxies
- Byteful
- CliProxy
- DataImpulse
- Decodo
- EnigmaProxy
- Evomi
- FastProxy
- FlashProxy
- GSocks
- Geonode
- GonzoProxy
- HydraProxy
- IPFly
- IPOasis
- IPPeak
- IPRoyal
- Infatica
- LemonBright
- LightningProxies
- MangoProxy
- MoMoProxy
- NSocks
- NodeMaven
- NodeProxy
- NovProxy
- NovaProxy
- Oxylabs
- Proxiware
- Proxy-Seller
- Proxy4U
- ProxyEmpire
- ProxyHat
- ProxyRack
- Proxyma
- PuraRoute
- RainProxy
- Shifter
- Thordata
- ThunderProxy
- VantageProxies
- VibeProxies
- VitalData
- VitalExclusive
- VitalProxy
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 |
|---|---|---|---|---|---|---|
| 81.25.16.0/20 | 4,096 | CZ-CEZNET21-20060227 | CEZNET s.r.o. (ORG-TBS13-RIPE) · CZ | ALLOCATED PA | Feb 27, 2006 | dohled@ |
| └ 81. | 1,280 | CEZNET | CER | ASSIGNED PA | Feb 27, 2006 | dohled@ via CZ-CEZNET21-20060227 |
| └ 81.25.21.0/24 | 256 | Comfeel | Comfeel - CustomersPeers | ASSIGNED PA | Apr 8, 2008 | dohled@ via CZ-CEZNET21-20060227 |
| └ 81.25.22.16/28 | 16 | TXN-CZ-MB | truconneXion a.s. | ASSIGNED PA | Oct 31, 2008 | dohled@ via CZ-CEZNET21-20060227 |
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
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 2,032 | >99% | 2 | |
| Business | 16 | 0.78% | 1 |
Network & registry
Origin network
AS57728
CZ
- Name
- CEZNET s.r.o.
- Type
- Internet provider
- Registered
- Oct 21, 2019
- Domain
- ceznet.cz
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2006
- Current origin since
- Apr 2021 · 5.6 yr
- Origin networks
- 3
- Last change of origin
- Apr 2021
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 81.25.16.0/21 | AS57728 | /21 | RIPE | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS57728 | RIPE | CEZNET s.r.o. | CEZNET-MNT | Sep 16, 2025 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 81.25.21.0/24 | AS197444 | RIPE | Comfeel | CEZNET-MNT | Sep 16, 2025 |
Whois
Registration for this announcement
- Range
- 81.
25. 16. 0/ 20 - Netname
- CZ-CEZNET21-20060227
- Registrant
- CEZNET s.r.o.
- Registrant country
- CZ
- Organization
- CEZNET s.r.o. (ORG-TBS13-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- Feb 27, 2006
- Updated
- Sep 16, 2025
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Feb 27, 2006
- Status
- assigned
Report abuse
Abuse contact
- dohled@
ceznet. cz - Name
- CEZNET hostmaster
- Handle
- CH13482-RIPE