AS199390 — ALFAKS Michal Swierk trading as ALFA-KOMPUTER SYSTEM

Network type: residential

AS199390 announces 3 IPv4 prefixes covering 3,072 addresses and 0 IPv6 prefixes.

About this network

ALFAKS is operated by ALFA-KOMPUTER SYSTEM, a Polish regional internet service provider.

What it's used for

• The address space carries residential and small business internet access, as indicated by the registrant netnames PL-ALFA-KOMPUTERSYSTEM-20130208 and PL-ALFA-KOMPUTERSYSTEM-20180417.
• The AS announces 3,072 IPv4 addresses across 3 prefixes and maintains 5 observed neighbours, a ratio consistent with a regional access network rather than a transit provider.
• Traffic from this AS consists of subscriber eyeballs and local business endpoints served by a cable/DSL ISP operating in Poland.

Notable

• Two of the three prefixes are registered to ALFA-KOMPUTER SYSTEM, while the third, 195.136.176.0/22, is registered to Exatel S.A. under the netname PL-TELENERGO-960503, suggesting leased or historically acquired address space.
• The inventory consists of three /22 blocks, all located in Poland, with no IPv6 prefixes announced.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 185.18.132.0/22
• 185.255.252.0/22
• 195.136.176.0/22

Upstream networks

• AS20804 Exatel S.A.
• AS50606 Horyzont Technologie Internetowe sp.z.o.o.
• AS24482 SG.GS

Adjacent networks

• AS20804 Exatel S.A.
• AS50606 Horyzont Technologie Internetowe sp.z.o.o.
• AS24482 SG.GS

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 6 route objects.
• Listed in as-sets: AS-EPIX, AS-EPIX-LOCAL, AS-EXATEL-INT, AS-EXATEL-PL, AS-RETN-ACTUAL-V4, AS-TPIX, AS-VIRTUAOPERATOR, AS29535:AS-TPIX, AS5617:AS-PL, AS5617:AS-WORLD-TRANSIT.