asn.dev

Autonomous system

AS51750 FMC-POLAND-AS

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly PL
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Fresenius Medical Care Polska

Poland · AI-generated

business healthcare corporate

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. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS29620Wojciech Sterna60

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
PLPoland1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51750
Registry name
FMC-POLAND-AS
Registrant
Fresenius Medical Care Polska SA
Abuse contact
cert.opl@orange.com
Registered
2010-10-29
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS51750
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS51750

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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

Cross-check