subnet.im

AS8890University of Warsaw

PolandRegistryRIPE NCC

As of 11th November 2026, AS8890 (University of Warsaw), a network registered in Poland with RIPE NCC, originates 2 IPv4 prefixes covering 20.5k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 7,057th-largest of the 80,743 networks we see originating IPv4, and the 85th-largest of 2,109 in Poland. It is seen behind 8 upstream networks, most often AS29535 (Orange Polska Spolka Akcyjna) and AS6939 (Hurricane Electric LLC). None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

2

IPv6 prefixes

1

IPv4 addresses

20.5k

IPv6 /64s

1.1B

Upstream graph

The networks AS8890 is seen behind, one and two hops out, drawn from real AS paths.

AS8890Toward the internet core
Upstream graph for AS8890: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS8890University of War…This networkAS6939Hurricane Electri…AS24940Hetzner Online Gm…AS29535Orange Polska Spo…AS43372TELNAP TELECOM Sp…AS49544i3D.net B.VAS20130Depaul UniversityAS132337AxclusiveAS6461Zayo BandwidthAS2914NTT America, Inc.AS3356Lumen (Level 3)AS6453TATA Communicatio…

Networks observed one and two hops upstream of AS8890 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

24

adjacent networks

Upstreams
833%
Peers
1667%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS8890
NetworkCountryRelationshipPathsVantage pts
AS29535Orange Polska Spolka AkcyjnaPLPeer14276
AS6939Hurricane Electric LLCUSPeer5451
AS43372TELNAP TELECOM Sp. z o.o.PLPeer84
AS49544i3D.net B.VNLPeer32
AS24940Hetzner Online GmbHDEPeer32
AS5617Orange Polska Spolka AkcyjnaPLPeer21
AS24482SG.GSSGPeer11
AS201054Stowarzyszenie e-PoludniePLPeer11

Prefixes

The largest blocks AS8890 originates, widest first.

Largest prefixes originated by AS8890
PrefixAddressesVisibility
193.0.64.0/1816.4k76/76
212.87.0.0/204.1k76/76
2001:6a0:4000::/341.1B × /6462/63

Routing health

How AS8890's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%3

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 1 prefixes

  • /341.1B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS8890 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.