Data as of Nov 6, 2026
81.200.63.0/24
2 residential-proxy exits · 30 daysO2 Czech Republic, a.s.
Residential-proxy exits
Proxy exits
2
0.78% of its addresses · 30 days
Providers
3
selling exits here
Oct 7, 2026 – Nov 5, 2026
Exits seen per day
16 observations
Proxy providers listing exits
- FastProxy
- LemonBright
- VitalExclusive
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 81.200.48.0/20 since Sep 2006 | AS41046 | Residential | 25 2 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 |
|---|---|---|---|---|---|---|
| 81.200.48.0/20 | 4,096 | CZ-CZNET-20060601 | O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZ | ALLOCATED PA | Jun 1, 2006 | abuse@ |
| └ 81.200.63.0/25 | 128 | NET-BKS-37-BV-CMTS | BKS Breclav cable modem customers | ASSIGNED PA | Apr 27, 2010 | abuse@ via CZ-CZNET-20060601 |
| └ 81. | 127 | NET-BKS-37-BV-FIBER | BKS Breclav Fiber-optics customers | ASSIGNED PA | Apr 28, 2010 | abuse@ 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
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 129 | 50% | 2 | |
| Business | 127 | 50% | 1 |
Network & registry
Announced by
Covering announcement 81.200.56.0/21
- Prefix
- 81.200.56.0/21
- Announced by
- AS41046 O2 Czech Republic, a.s.
- Type
- Residential
- Proxy exits
- 10
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- CZ-CZNET-20060601
- Registrant
- O2 Czech Republic, a.s.
- RIR
- RIPE NCC
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
Routing timeline
Covering aggregate above, the prefix's own history below
81.200.56.0/21
Routing history
- Pattern
- Stable
- First seen
- Mar 2011
- Current origin since
- Mar 2011 · 16 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 81.200.56.0/21 | AS41046 | /21 | RIPE | RPKI valid |
| 81.200.48.0/20 | AS41046 | /20 | RIPE | Too specific |
IRR
Route objects on 81.200.56.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS41046 | RIPE | NEJTV | KTVTRINEC-MNT | Jul 13, 2012 |
Whois
Registration for this announcement
- Range
- 81.
200. 48. 0/ 20 - Netname
- CZ-CZNET-20060601
- 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
- Jun 1, 2006
- Updated
- Jun 20, 2024
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Jun 1, 2006
- Status
- assigned
Report abuse
Abuse contact
- abuse@
o2. cz - Name
- Abuse-C Role
- Handle
- AR14410-RIPE