Data as of Nov 14, 2026
81.90.255.0/24
No anonymizer space · no proxy exits in 30 daysABAK, Co.Ltd.
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 |
|---|---|---|---|---|---|---|
| 81.90.240.0/20 | 4,096 | CZ-ABAK-20060420 | ABAK, Co.Ltd. (ORG-AL50-RIPE) · CZ | ALLOCATED PA | Apr 21, 2006 | jan. |
| └ 81. | 2,560 | ujezdnet | Internet service provider | ASSIGNED PA | May 13, 2009 | jan. via CZ-ABAK-20060420 |
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 81.90.240.0/20
- Prefix
- 81.90.240.0/20
- Announced by
- AS39761 ABAK, Co.Ltd.
- Type
- Residential
- Proxy exits
- 28
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- CZ-ABAK-20060420
- Registrant
- ABAK, Co.Ltd.
- RIR
- RIPE NCC
Origin network
AS39761
CZ
- Name
- ABAK, Co.Ltd.
- Type
- Internet provider
- Registered
- Apr 21, 2006
- Domain
- abak.cz
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 81.90.240.0/20
81.90.240.0/20
Routing history
- Pattern
- Stable
- First seen
- Jun 2006
- Current origin since
- Jun 2006 · 20 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 81.90.240.0/20 | AS39761 | /24 | RIPE | RPKI valid |
IRR
Route objects on 81.90.240.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS39761 | RIPE | ABAK Internet network | MNT-ABAK | Jun 4, 2006 |
Whois
Registration for this announcement
- Range
- 81.
90. 240. 0/ 20 - Netname
- CZ-ABAK-20060420
- Registrant
- ABAK, Co.Ltd.
- Registrant country
- CZ
- Organization
- ABAK, Co.Ltd. (ORG-AL50-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- Apr 21, 2006
- Updated
- May 19, 2016
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Apr 21, 2006
- Status
- assigned
Report abuse
Abuse contact
- jan.
pilny@ abak. cz - Name
- Abuse-C Role
- Handle
- AR14388-RIPE