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AS numbers

AS203287 Cybernet Poland

AS203287 is operated by Cybernet Poland and registered with RIPE NCC (PL) since 2018-04-23.

It announces 2 IPv4 and 0 IPv6 prefixes, 100% of them RPKI valid.

RIPE RIS sees 1 upstream and peer networks and 0 downstream networks next to it.

PeeringDB lists it as a Cable/DSL/ISP network at 1 internet exchange and 1 facility. Its peering policy is open.

NameCybernet Poland
Registry (RIR)RIPE NCC
CountryPoland (PL)
Delegated on2018-04-23
Network typeCable/DSL/ISP, Regional
Peering policyOpen
Prefixes (IPv4 / IPv6)2 / 0
RPKI valid100% (2 / 2)
Upstreams and peers1
Downstream networks0
Websitecb-net.pl

Routing health

  • AS203287 announces 2 IPv4 and 0 IPv6 prefixes.
  • No IPv6 prefixes announced.
  • All 2 announced prefixes are RPKI valid.
  • One upstream or peer seen (AS42739): an outage there takes the whole network off the internet.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

Announced prefixes 2

  • 78.159.85.0/24
  • 95.215.64.0/22

Upstreams and peers 1

The networks RIPE RIS sees next to AS203287 in BGP paths, the most visible first.

Peering

Peering policy: Open. Suggested max-prefix limits: 2 IPv4, 1 IPv6. PeeringDB record

Internet exchanges 1
ExchangePortsSpeedRoute server
EPIX.Katowice11GNo
Facilities 1
FacilityCityCountry
4 Data CenterKatowicePL

More about AS203287

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-15 16:08 UTC. The country is where the AS number was registered, not necessarily where the network operates.