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AS215133Jakub Witkowski

PolandRegistryRIPE NCC

As of 27th September 2026, AS215133 (Jakub Witkowski), a network registered in Poland with RIPE NCC, originates 9 IPv4 prefixes covering 2.3k addresses. By IPv4 address space that makes it the 24,093rd-largest of the 79,525 networks we see originating IPv4, and the 467th-largest of 2,096 in Poland. It is seen behind 2 upstream networks, most often AS200954 (Andrey Shemanin) and AS137409 (GSL Networks Pty LTD). 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

9

IPv6 prefixes

0

IPv4 addresses

2.3k

IPv6 /64s

0

Upstream graph

The networks AS215133 is seen behind, one and two hops out, drawn from real AS paths.

AS215133Toward the internet core
Upstream graph for AS215133: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS215133Jakub WitkowskiThis networkAS137409GSL Networks Pty …AS200954Andrey ShemaninAS8529Zain Omantel Inte…AS32590Valve CorporationAS207208MEVSPACE sp. z o.…

Networks observed one and two hops upstream of AS215133 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS215133
NetworkCountryRelationshipPathsVantage pts
AS200954Andrey ShemaninRUPeer64881
AS137409GSL Networks Pty LTDAUPeer8181

Prefixes

The largest blocks AS215133 originates, widest first.

Largest prefixes originated by AS215133
PrefixAddressesVisibility
13.141.35.0/2425681/81
13.141.56.0/2425681/81
13.141.64.0/2425681/81
201.3.237.0/2425681/81
201.4.72.0/2425681/81
201.4.76.0/2425681/81
201.7.19.0/2425681/81
201.7.22.0/2425681/81
201.7.27.0/2425681/81

Routing health

How AS215133'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%9
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%9
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 9 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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