Data as of Nov 4, 2026
146.158.89.0/24
No anonymizer space · no proxy exits in 30 daysALFA TELECOM s.r.o.
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 |
|---|---|---|---|---|---|---|
| 146.158.0.0/17 | 32,768 | CZ-ALFATELECOM-20110712 | ALFA TELECOM s.r.o. (ORG-ATS13-RIPE) · CZ | ALLOCATED PA | Jul 12, 2011 | abuse@ |
| └ 146.158.88.0/22 | 1,024 | SIBMEDVED-NET | SM Ltd. (ORG-LS491-RIPE) · RU | ASSIGNED PA | Mar 6, 2026 | abuse@ |
Network & registry
Announced by
Covering announcement 146.158.0.0/17
- Prefix
- 146.158.0.0/17
- Announced by
- AS44546 ALFA TELECOM s.r.o.
- Type
- Residential
- Proxy exits
- 5,263
- Always-on exits
- 1,429
- RPKI
- RPKI valid
- Netname
- CZ-ALFATELECOM-20110712
- Registrant
- ALFA TELECOM s.r.o.
- RIR
- RIPE NCC
Origin network
AS44546
CZ
- Name
- ALFA TELECOM s.r.o.
- Type
- Internet provider
- Registered
- Feb 5, 2008
- Domain
- alfatelecom.cz
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 146.158.0.0/17
146.158.0.0/17
Routing history
- Pattern
- Stable
- First seen
- May 2014
- Current origin since
- May 2014 · 13 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 146.158.0.0/17 | AS44546 | /24 | RIPE | RPKI valid |
IRR
Route objects on 146.158.0.0/17
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS44546 | RIPE | IP-AS.COM | RIPE-DB-MNT | Jul 1, 2022 |
Whois
Registration for this announcement
- Range
- 146.
158. 0. 0/ 17 - Netname
- CZ-ALFATELECOM-20110712
- Registrant
- ALFA TELECOM s.r.o.
- Registrant country
- EU
- Organization
- ALFA TELECOM s.r.o. (ORG-ATS13-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- Jul 12, 2011
- Updated
- May 16, 2023
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Jul 12, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
alfatelecom. cz - Name
- Alfa Telecom s.r.o. NOC
- Handle
- ATCZ-RIPE