AS199105 — CEZ Centrum e-Zdrowia - Panstwowa Jednostka Organizacyjna

AS199105 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

The AS handle CEZ is held by Centrum e-Zdrowia - Panstwowa Jednostka Organizacyjna.

What it's used for

• The address space carries infrastructure for the Polish National e-Health Centre, a state organizational unit responsible for the country's electronic health system.
• The network announces a single IPv4 prefix, 109.197.164.0/24, comprising 256 addresses, with 2 observed routing neighbours.
• Traffic from this AS consists of backend services, administrative endpoints, and data infrastructure supporting national health information exchange and electronic patient records.

Notable

• The registrant for the announced prefix matches the AS holder, identified as Centrum e-Zdrowia - Panstwowa Jednostka Organizacyjna with netname CEZ.
• The address inventory is minimal, consisting of a single /24 block, which is typical for a specialized government agency rather than a general-purpose ISP or large enterprise.

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

Announced prefixes

• 109.197.164.0/24

Upstream networks

• AS50606 Horyzont Technologie Internetowe sp.z.o.o.
• AS5617 Orange Polska Spolka Akcyjna

Adjacent networks

• AS50606 Horyzont Technologie Internetowe sp.z.o.o.
• AS5617 Orange Polska Spolka Akcyjna

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.
• Listed in as-sets: AS-IPARTNERS, AS-NETIA, AS-NETIA-MSK-IX, AS-NETIA-PEERING, AS-PLUSNET, AS-RETN-ACTUAL-V4, AS-VIRTUAOPERATOR, AS5617:AS-PL, AS5617:AS-WORLD-TRANSIT, AS8246:AS-TPNET.