Autonomous system
AS52092 ALFSERVIS-AS
Residential RIPE Cable/DSL/ISP
Summary
Alf servis
isp residential czech cable
ALFSERVIS-AS is operated by Alf servis, s.r.o.
What it's used for
- The space carries residential access traffic, evidenced by the reverse DNS record
dnat1-255.alfservis.czand the netnameALFSERVIS-NET. - The AS announces 4608 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 27 observed neighbours; this ratio indicates a local access provider rather than a transit carrier.
- Traffic consists of subscriber eyeballs for cable and DSL services in the Blansko region of the Czech Republic.
Notable
- Registrants align with the announcer for the primary block, with
Alf servis, s.r.o.holding46.149.112.0/20, whileJaromir Sebelaholds the smaller91.227.134.0/23block under the netnameJaromirSebela. - The address inventory is compact, consisting of one /20 and one /23 block, typical of a regional ISP with limited geographic footprint.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Peering.cz | Prague, Czech Republic | 185.0.20.98 |
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.17.27 |
Transit providers
8 upstream, 0 downstream and 14 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 4.61K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS52092- Registry name
- ALFSERVIS-AS
- Registrant
- ALFSERVIS-MNT
- Abuse contact
- alexnvis@gmail.com
- Registered
- 2010-12-27
- Last changed
- 2024-05-30
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Alf servis
- Network type
- Cable/DSL/ISP
- Scope
- Europe
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
RIPE::AS-ALFSERVIS- Present at
- 2 exchanges
- Facilities
- 1 facilities
- Website
- https://www.alfservis.cz
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 5 authorising AS52092
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS52092
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,852 prefixes, as published 2026-10-27. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere