asn.dev

Observed topology

AS20804 ASN-TELENERGO ul. PERKUNA 47, WARSZAWA

Unclassified RIPE

Upstreams 30 carry this network
Downstreams 287 this network carries
Adjacent (IPv4) 335
Adjacent (IPv6) 72
Upstream graph Who carries AS20804, and who carries them, drawn as a map up to the transit-free core. 16 exchanges Where AS20804 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 30

Networks observed carrying traffic for AS20804: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS6461Zayo BandwidthTransitIPv4 IPv6266
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv6144
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6106
AS6939Hurricane Electric LLCTransitIPv4 IPv697
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv647
AS50304Blix Solutions ASUnclassifiedIPv4 IPv632
AS24482SG.GSHostingIPv4 IPv616
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv616
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv616
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv616

All 30 upstreams →

Transit

Downstream networks

All 287

Networks for which AS20804 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS199715MSI Telekom Sp. z o.o. Sp. k.UnclassifiedIPv4944
AS43769Eurolan Sp. zooUnclassifiedIPv4649
AS39507Biznes Swiatlowodem Sp. z o.o.UnclassifiedIPv4 IPv6601
AS47790Mariusz Chmielewski trading as NetfalaUnclassifiedIPv4 IPv6598
AS25070Comarch S.A.UnclassifiedIPv4 IPv6580
AS57608FIBO SAUnclassifiedIPv4 IPv6550
AS60243Gmina Miasta RadomiaUnclassifiedIPv4 IPv6504
AS34339Centrum Przetwarzania Danych Ministerstwa FinansowUnclassifiedIPv4481
AS48424GLOBITEL Sp. z o.o.UnclassifiedIPv4 IPv6475
AS198401Geckonet Sp. z o. o.UnclassifiedIPv4460

All 287 downstreams →

Adjacency

Adjacent networks

All 341

Every AS seen directly next to AS20804 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6461Zayo BandwidthTransitIPv4 IPv65,873
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv63,635
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv62,495
AS6939Hurricane Electric LLCTransitIPv4 IPv62,291
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv62,108
AS60280Republican Unitary Enterprise "National Traffic Exchange Center"UnclassifiedIPv41,971
AS59919Brainbox S.r.l.ResidentialIPv41,742
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv41,711
AS50304Blix Solutions ASUnclassifiedIPv4 IPv61,506
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv61,147

All 341 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-26 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.