asn.dev

Observed topology

AS42005 LIGHTSTORM-COMMUNICATIONS-SRO-SK-AS Peerings

Hosting APNIC

Upstreams 10 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 11
Adjacent (IPv6) 9
Upstream graph Who carries AS42005, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS42005 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS42005: 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
AS1299Arelion Sweden ABTransitIPv4638
AS39392SH.cz s.r.o.HostingIPv4 IPv6168
AS6939Hurricane Electric LLCTransitIPv4 IPv6164
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv617
AS24482SG.GSHostingIPv4 IPv616
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv616
AS3303Swisscom (Schweiz) AGResidentialIPv415
AS31230Slovak University of Technology in BratislavaUnclassifiedIPv415
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbHUnclassifiedIPv61
AS8218Zayo Infrastructure France SAUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS42005 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS57475LightStorm Services s.r.o.UnclassifiedIPv4 IPv6211
AS58014ZUTOM s.r.o.UnclassifiedIPv4 IPv6211
AS51653PRESNET s.r.o.UnclassifiedIPv48

Adjacency

Adjacent networks

All 13

Every AS seen directly next to AS42005 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4864
AS6939Hurricane Electric LLCTransitIPv4 IPv6252
AS39392SH.cz s.r.o.HostingIPv4 IPv6244
AS57475LightStorm Services s.r.o.UnclassifiedIPv4 IPv6211
AS58014ZUTOM s.r.o.UnclassifiedIPv4 IPv6211
AS29504Freenet Liberec, z.s.UnclassifiedIPv4 IPv625
AS24482SG.GSHostingIPv4 IPv624
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv624
AS3303Swisscom (Schweiz) AGResidentialIPv421
AS31230Slovak University of Technology in BratislavaUnclassifiedIPv421

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-17 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.18M 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.