subnet.im

AS20555Akademia WIT w Warszawie

PolandRegistryRIPE NCC

As of 11th November 2026, AS20555 (Akademia WIT w Warszawie), a network registered in Poland with RIPE NCC, originates 2 IPv4 prefixes covering 1.5k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 31,740th-largest of the 80,743 networks we see originating IPv4, and the 632nd-largest of 2,109 in Poland. It is seen behind 8 upstream networks, most often AS24724 (Atman Sp. z o.o.) and AS6939 (Hurricane Electric LLC). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

2

IPv6 prefixes

1

IPv4 addresses

1.5k

IPv6 /64s

65.5k

Upstream graph

The networks AS20555 is seen behind, one and two hops out, drawn from real AS paths.

AS20555Toward the internet core
Upstream graph for AS20555: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20555Akademia WIT w Wa…This networkAS6939Hurricane Electri…AS8664University of War…AS24482SG.GSAS24724Atman Sp. z o.o.AS24940Hetzner Online Gm…AS20130Depaul UniversityAS132337AxclusiveAS8501Institute of Bioo…AS38623Metfone (Viettel …AS215859Hetzner Cloud - S…AS6461Zayo BandwidthAS7713PT Telkom Indones…

Networks observed one and two hops upstream of AS20555 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

21

adjacent networks

Upstreams
838%
Peers
1362%
Downstreams
00%

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

Upstreams of AS20555
NetworkCountryRelationshipPathsVantage pts
AS24724Atman Sp. z o.o.PLPeer12465
AS6939Hurricane Electric LLCUSPeer5754
AS8664University of WarsawPLPeer1910
AS24482SG.GSSGPeer53
AS24940Hetzner Online GmbHDEPeer32
AS49544i3D.net B.VNLPeer32
AS1887NAUKOWA I AKADEMICKA SIEC KOMPUTEROWA - PANSTWOWY INSTYTUT BADAWCZYPLPeer21
AS201054Stowarzyszenie e-PoludniePLPeer11

Prefixes

The largest blocks AS20555 originates, widest first.

Largest prefixes originated by AS20555
PrefixAddressesVisibility
213.135.44.0/221k76/76
213.135.48.0/2351276/76
2001:1a68:a::/4865.5k × /6462/63

Routing health

How AS20555'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

  • Valid100.0%3
  • Invalid0.0%0
  • No ROA0.0%0

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

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS20555 started or stopped in this period.

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