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AS218646Ksawery Duda

European UnionRegistryRIPE NCC

As of 27th September 2026, AS218646 (Ksawery Duda), a network registered in European Union with RIPE NCC, originates 2 IPv6 prefixes. It is seen behind 2 upstream networks, most often AS214762 (Sebastian Stefanek trading as MatHost.eu) and AS201640 (Patryk Kulikowski trading as psHost). 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

0

IPv6 prefixes

2

IPv4 addresses

0

IPv6 /64s

131k

Upstream graph

The networks AS218646 is seen behind, one and two hops out, drawn from real AS paths.

AS218646Toward the internet core
Upstream graph for AS218646: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS218646Ksawery DudaThis networkAS201640Patryk Kulikowski…AS214762Sebastian Stefane…AS214379South Park Networ…AS6204TMRC GROUP SRLAS6939Hurricane Electri…

Networks observed one and two hops upstream of AS218646 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

3

adjacent networks

Upstreams
267%
Peers
133%
Downstreams
00%

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

Upstreams of AS218646
NetworkCountryRelationshipPathsVantage pts
AS214762Sebastian Stefanek trading as MatHost.euPLAdjacent6363
AS201640Patryk Kulikowski trading as psHostPLPeer6363

Prefixes

The largest blocks AS218646 originates, widest first.

Largest prefixes originated by AS218646
PrefixAddressesVisibility
2a06:9801:fcb::/4865.5k × /6463/64
2a06:9801:1560::/4865.5k × /6463/64

Routing health

How AS218646'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%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

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.