asn.dev

Observed topology

AS3258 XTOM-JAPAN xTom Japan Corporation

Hosting RIPE Cable/DSL/ISP

Upstreams 8 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 13
Adjacent (IPv6) 7
Upstream graph Who carries AS3258, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS3258 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS3258: 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
AS137409GSL Networks Pty LTDUnclassifiedIPv4 IPv64,406
AS17676SoftBank Corp.MobileIPv41,809
AS6939Hurricane Electric LLCTransitIPv4 IPv61,261
AS2497Internet Initiative Japan Inc.UnclassifiedIPv4 IPv61,055
AS24482SG.GSHostingIPv4 IPv6159
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv6145
AS20485Joint Stock Company TransTeleComUnclassifiedIPv4133
AS10099China Unicom GlobalUnclassifiedIPv424

Transit

Downstream networks

inferred

Networks for which AS3258 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS215871xTom Japan CorporationUnclassifiedIPv4 IPv6125
AS400506Black AppleUnclassifiedIPv4118
AS25820IT7 Networks IncHostingIPv480
AS24013SB Professional ServicesHostingIPv44

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS3258 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS137409GSL Networks Pty LTDUnclassifiedIPv4 IPv64,666
AS17676SoftBank Corp.MobileIPv41,893
AS6939Hurricane Electric LLCTransitIPv4 IPv61,368
AS2497Internet Initiative Japan Inc.UnclassifiedIPv4 IPv61,069
AS215871xTom Japan CorporationUnclassifiedIPv4 IPv6193
AS24482SG.GSHostingIPv4 IPv6169
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv6155
AS20485Joint Stock Company TransTeleComUnclassifiedIPv4134
AS400506Black AppleUnclassifiedIPv4118
AS3204xTom OUHostingIPv697

All 14 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.