asn.dev

Observed topology

AS10204 ARCNET-NTTMSC-MY Arcnet NTT MSC ISP

Unclassified APNIC NSP

Upstreams 8 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 4
Upstream graph Who carries AS10204, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS10204 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS10204: 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
AS2914NTT America, Inc.TransitIPv4 IPv6826
AS4637Telstra GlobalUnclassifiedIPv4 IPv6333
AS17645ASN - NTT SINGAPORE PTE LTDUnclassifiedIPv4 IPv6287
AS6939Hurricane Electric LLCTransitIPv4186
AS19551Incapsula IncHostingIPv4142
AS38001NewMedia Express Pte LtdHostingIPv4 IPv622
AS55720Gigabit Hosting Sdn BhdHostingIPv418
AS24482SG.GSHostingIPv412

Transit

Downstream networks

inferred

Networks for which AS10204 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS55571No. 43000,UnclassifiedIPv4102
AS2571DHL Information Services (Europe) s.r.oUnclassifiedIPv458
AS136751Teleperformance Malaysia Sdn BhdUnclassifiedIPv458
AS19236Steelcase, Inc.UnclassifiedIPv435

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS10204 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv6949
AS4637Telstra GlobalUnclassifiedIPv4 IPv6404
AS17645ASN - NTT SINGAPORE PTE LTDUnclassifiedIPv4 IPv6305
AS6939Hurricane Electric LLCTransitIPv4217
AS19551Incapsula IncHostingIPv4142
AS55571No. 43000,UnclassifiedIPv4102
AS2571DHL Information Services (Europe) s.r.oUnclassifiedIPv458
AS136751Teleperformance Malaysia Sdn BhdUnclassifiedIPv458
AS19236Steelcase, Inc.UnclassifiedIPv435
AS38001NewMedia Express Pte LtdHostingIPv4 IPv627

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-11 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.47M 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.