AS52092 — ALFSERVIS-AS Alf servis, s.r.o.

Network type: residential

AS52092 announces 2 IPv4 prefixes covering 4,608 addresses and 1 IPv6 prefixes.

About this network

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.cz and the netname ALFSERVIS-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. holding 46.149.112.0/20, while Jaromir Sebela holds the smaller 91.227.134.0/23 block under the netname JaromirSebela.
• 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.

Announced prefixes

• 46.149.112.0/20
• 91.227.134.0/23
• 2001:67c:3b4::/48

Upstream networks

• AS39392 SH.cz s.r.o.
• AS6939 Hurricane Electric LLC
• AS8218 Zayo Infrastructure France SA
• AS24482 SG.GS
• AS29504 Freenet Liberec, z.s.
• AS37721 Virtual Technologies & Solutions
• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
• AS20562 Broadband Hosting B.V.

Adjacent networks

• AS39392 SH.cz s.r.o.
• AS6939 Hurricane Electric LLC
• AS29504 Freenet Liberec, z.s.
• AS8218 Zayo Infrastructure France SA
• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS20562 Broadband Hosting B.V.

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 5 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-ALFSERVIS, AS-NIXCZ-RSCLIENTS, AS-PEERINGCZ-RS, AS-SUPERNETWORK, AS47200:AS-NIXCZ-RSCLIENTS, AS8508:AS-SASK-UPC-IN.

Internet exchanges

• Peering.cz — Prague, Czech Republic
• NIX.CZ - Neutral Internet eXchange for the Czech Republic — Prague, Czech Republic