Data as of Nov 5, 2026
31.148.247.0/24
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 |
|---|---|---|---|---|---|---|
| 31.148.0.0/16 | 65,536 | CZ-ALFATELECOM-20110211 | ALFA TELECOM s.r.o. (ORG-ATS13-RIPE) · CZ | ALLOCATED PA | Feb 11, 2011 | abuse@ |
| └ 31.148.247.0/24 | 256 | SERVEREL-NET | Serverel Inc. (ORG-SI191-RIPE) · US | ASSIGNED PA | Sep 20, 2018 | abuse@ |
Network & registry
Announced by
Covering announcement 31.148.0.0/16
- Prefix
- 31.148.0.0/16
- Announced by
- AS44546 ALFA TELECOM s.r.o.
- Type
- Residential
- Proxy exits
- 12,418
- Always-on exits
- 1,533
- RPKI
- RPKI valid
- Netname
- CZ-ALFATELECOM-20110211
- 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 31.148.0.0/16
31.148.0.0/16
Routing history
- Pattern
- Stable
- First seen
- Nov 2013
- Current origin since
- Nov 2013 · 13 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 31.148.0.0/16 | AS44546 | /24 | RIPE | RPKI valid |
IRR
Route objects on 31.148.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS44546 | RIPE | IP-AS.COM | RIPE-DB-MNT | Feb 14, 2023 |
Whois
Registration for this announcement
- Range
- 31.
148. 0. 0/ 16 - Netname
- CZ-ALFATELECOM-20110211
- Registrant
- ALFA TELECOM s.r.o.
- Registrant country
- CZ
- Organization
- ALFA TELECOM s.r.o. (ORG-ATS13-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- Feb 11, 2011
- Updated
- May 16, 2023
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Feb 11, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
alfatelecom. cz - Name
- Alfa Telecom s.r.o. NOC
- Handle
- ATCZ-RIPE