subnet.im

AS219455Aleksander Wilczynski trading as ALEKSWILC

PolandRegistryRIPE NCC

As of 27th September 2026, AS219455 (Aleksander Wilczynski trading as…), a network registered in Poland with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 59,143rd-largest of the 79,536 networks we see originating IPv4, and the 1,341st-largest of 2,096 in Poland. It is seen behind 2 upstream networks, most often AS16276 (OVH SAS) and AS201132 (Mateusz Sikorski trading as MSCode). 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

1

IPv6 prefixes

1

IPv4 addresses

256

IPv6 /64s

65.5k

Upstream graph

The networks AS219455 is seen behind, one and two hops out, drawn from real AS paths.

AS219455Toward the internet core
Upstream graph for AS219455: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS219455Aleksander Wilczy…This networkAS16276OVH SASAS201132Mateusz Sikorski …AS174Cogent Communicat…AS1299Arelion (fka. Tel…AS214762Sebastian Stefane…

Networks observed one and two hops upstream of AS219455 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 AS219455
NetworkCountryRelationshipPathsVantage pts
AS16276OVH SASFRPeer8282
AS201132Mateusz Sikorski trading as MSCodePLPeer6464

Prefixes

The largest blocks AS219455 originates, widest first.

Largest prefixes originated by AS219455
PrefixAddressesVisibility
85.118.167.0/2425682/82
2a06:9801:79d::/4865.5k × /6464/65

Routing health

How AS219455'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

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS219455 started or stopped in this period.

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