AS51750 — FMC-POLAND-AS Fresenius Medical Care Polska SA

AS51750 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

The AS handle FMC-POLAND-AS is held by Fresenius Medical Care Polska SA.

What it's used for

• The space carries corporate infrastructure for a healthcare provider, evidenced by the netname FMC-POLAND and reverse DNS entries pointing to fmc.tami.pl.
• The inventory consists of 256 IPv4 addresses within a single /24 prefix (91.220.18.0/24) and 0 IPv6 prefixes, with only 1 observed neighbour, indicating a small, self-contained internal network rather than a transit or access provider.
• Traffic from this AS consists of office workers and clinical staff accessing corporate resources, as Fresenius Medical Care Polska operates dialysis centers and provides renal care services in Poland.

Notable

• The registrant Fresenius Medical Care Polska SA matches the AS holder and the netname FMC-POLAND, confirming consistent ownership.
• The address inventory is a single contiguous /24 block, typical of a corporate site or regional office estate rather than a distributed service network.

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

Announced prefixes

• 91.220.18.0/24

Upstream networks

• AS29620 Wojciech Sterna

Adjacent networks

• AS29620 Wojciech Sterna

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 1 route objects.
• Listed in as-sets: AS-NETIA, AS-NETIA-MSK-IX, AS-NETIA-PEERING, AS-RETN-ACTUAL-V4, AS-TAMI, AS5617:AS-PL, AS5617:AS-WORLD-TRANSIT, AS8246:AS-TPNET.