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AS219173Mateusz Tomkiel

PolandRegistryRIPE NCC

As of 27th September 2026, AS219173 (Mateusz Tomkiel), 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 59,127th-largest of the 79,525 networks we see originating IPv4, and the 1,341st-largest of 2,096 in Poland. It is seen behind 2 upstream networks, most often AS214762 (Sebastian Stefanek trading as MatHost.eu) and AS209533 (iFog GmbH - BGPTunnel). 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 AS219173 is seen behind, one and two hops out, drawn from real AS paths.

AS219173Toward the internet core
Upstream graph for AS219173: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS219173Mateusz TomkielThis networkAS209533iFog GmbH - BGPTu…AS214762Sebastian Stefane…AS34927iFog GmbHAS6939Hurricane Electri…AS6204TMRC GROUP SRL

Networks observed one and two hops upstream of AS219173 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 AS219173
NetworkCountryRelationshipPathsVantage pts
AS214762Sebastian Stefanek trading as MatHost.euPLPeer142142
AS209533iFog GmbH - BGPTunnelCHPeer22

Prefixes

The largest blocks AS219173 originates, widest first.

Largest prefixes originated by AS219173
PrefixAddressesVisibility
201.3.238.0/2425681/81
2a06:9801:f15::/4865.5k × /6463/64

Routing health

How AS219173'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.

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