AS42923 — PLK-AS PLK AS Number

AS42923 announces 2 IPv4 prefixes covering 1,280 addresses and 0 IPv6 prefixes.

About this network

PLK-AS is held by PKP Polskie Linie Kolejowe S.A., the Polish national railway infrastructure manager.

What it's used for

• The address space carries internal corporate and infrastructure traffic, evidenced by reverse DNS entries such as 217-79-146-254.static.ip.netia.com.pl and 88-199-162-64.tktelekom.pl.
• The AS announces 1280 IPv4 addresses across 2 prefixes with 3 observed neighbours, a ratio consistent with a small, self-contained internal network rather than a transit or large access provider.
• Traffic from this AS represents the operational and administrative network of Poland's railway infrastructure manager, supporting internal systems and site connectivity.

Notable

• Registrants differ from the announcer: 217.79.144.0/22 is registered to Powszechna Agencja Informacyjna S.A. (netname PL-PAGI-20031112), while 88.199.162.0/24 is registered to TKTelekom's Abuse Team (netname PL-PLKSA).
• The address inventory is small and finely subdivided, typical of an internal corporate estate with site-by-site segmentation.

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

Announced prefixes

• 88.199.162.0/24
• 217.79.144.0/22

Upstream networks

• AS20804 Exatel S.A.
• AS12741 Netia SA

Adjacent networks

• AS20804 Exatel S.A.
• AS12741 Netia SA

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.
• Listed in as-sets: AS-EXATEL-INT, AS-EXATEL-PL, AS-IPARTNERS, AS-NETIA, AS-VIRTUAOPERATOR, AS5617:AS-PL, AS8246:AS-TPNET.