asn.dev

Observed topology

AS15935 HA-VEL-LOCAL-AS ha-vel internet s.r.o.

Unclassified RIPE

Upstreams 14 carry this network
Downstreams 15 this network carries
Adjacent (IPv4) 30
Adjacent (IPv6) 22
Upstream graph Who carries AS15935, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS15935 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 14

Networks observed carrying traffic for AS15935: 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
AS9002RETN LimitedUnclassifiedIPv4 IPv6198
AS174Cogent Communications, LLCTransitIPv4 IPv6146
AS6939Hurricane Electric LLCTransitIPv4 IPv6143
AS50263A-Systems Sp. z o.o.UnclassifiedIPv4 IPv662
AS1299Arelion Sweden ABTransitIPv4 IPv626
AS6461Zayo BandwidthTransitIPv420
AS24482SG.GSHostingIPv4 IPv616
AS49559A-Systems Sp. z o.o.UnclassifiedIPv416
AS6830Liberty Global Europe Holding B.V.ResidentialIPv415
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv614

All 14 upstreams →

Transit

Downstream networks

All 15

Networks for which AS15935 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS197451Brno University of TechnologyEducationIPv4 IPv6191
AS198143Ceska Posta s.p.UnclassifiedIPv4 IPv6158
AS201727Blond & Brown s.r.o.UnclassifiedIPv4 IPv6129
AS198284Mesto Velka BystriceUnclassifiedIPv4 IPv6114
AS56360TRINITY CZECH REPUBLIC, s.r.o.UnclassifiedIPv4 IPv691
AS200844STUDENT AGENCY k.s.UnclassifiedIPv4 IPv679
AS203550i2net cz s.r.o.UnclassifiedIPv4 IPv667
AS56747Nelson Services, s.r.o.UnclassifiedIPv459
AS51968NEOS v.o.s.UnclassifiedIPv458
AS215806Albert Ceska republika, s.r.o.UnclassifiedIPv457

All 15 downstreams →

Adjacency

Adjacent networks

All 31

Every AS seen directly next to AS15935 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS197451Brno University of TechnologyEducationIPv4 IPv6874
AS9002RETN LimitedUnclassifiedIPv4 IPv6806
AS174Cogent Communications, LLCTransitIPv4 IPv6674
AS6939Hurricane Electric LLCTransitIPv4 IPv6617
AS204860NetX Networks a.s.UnclassifiedIPv4 IPv6399
AS50263A-Systems Sp. z o.o.UnclassifiedIPv4 IPv6388
AS198143Ceska Posta s.p.UnclassifiedIPv4 IPv6158
AS201727Blond & Brown s.r.o.UnclassifiedIPv4 IPv6129
AS198284Mesto Velka BystriceUnclassifiedIPv4 IPv6114
AS51744Non-profit organization Jablonka.czUnclassifiedIPv4 IPv6111

All 31 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.00M 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.