asn.dev

Observed topology

AS25084 CZESTMAN-COM-AS Non-academic AS dedicated to Metropolitan Area Network

Unclassified RIPE Educational/Research

Upstreams 7 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 14
Adjacent (IPv6) 6
Upstream graph Who carries AS25084, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS25084 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS25084: 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
AS13293Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv659
AS196844Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv651
AS6939Hurricane Electric LLCTransitIPv4 IPv629
AS5617Orange Polska Spolka AkcyjnaMobileIPv46
AS24482SG.GSHostingIPv4 IPv63
AS33891Core-Backbone GmbHHostingIPv42
AS201054Stowarzyszenie e-PoludnieUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS25084 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS15373Politechnika CzestochowskaUnclassifiedIPv4 IPv6130
AS202667Klasztor OO Paulinow Jasna GoraUnclassifiedIPv4118
AS44454Czestochowska Spoldzielnia Mieszkaniowa "Nasza Praca"ResidentialIPv487
AS41056APUS Piotr SejfriedUnclassifiedIPv459
AS200272x-kom sp. z o.o.UnclassifiedIPv446
AS209860My Net Michal BronczkowskiUnclassifiedIPv432
AS206241STOWARZYSZENIE DO SPRAW ROZWOJU SPOLECZENSTWA INFORMACYJNEGO SUBREGIONU POLNOCNEGO WOJEWODZTWA SLASKIEGOUnclassifiedIPv428
AS196730TELSAT.TV Sp. z o.o.UnclassifiedIPv46

Adjacency

Adjacent networks

All 15

Every AS seen directly next to AS25084 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS196844Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv6288
AS13293Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking CenterUnclassifiedIPv4 IPv6231
AS15373Politechnika CzestochowskaUnclassifiedIPv4 IPv6130
AS6939Hurricane Electric LLCTransitIPv4 IPv6122
AS202667Klasztor OO Paulinow Jasna GoraUnclassifiedIPv4118
AS44454Czestochowska Spoldzielnia Mieszkaniowa "Nasza Praca"ResidentialIPv487
AS209860My Net Michal BronczkowskiUnclassifiedIPv472
AS41056APUS Piotr SejfriedUnclassifiedIPv459
AS200272x-kom sp. z o.o.UnclassifiedIPv446
AS206241STOWARZYSZENIE DO SPRAW ROZWOJU SPOLECZENSTWA INFORMACYJNEGO SUBREGIONU POLNOCNEGO WOJEWODZTWA SLASKIEGOUnclassifiedIPv428

All 15 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-24 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 72.94M 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.