asn.dev

Observed topology

AS9270 APAN-KR-AS National Infomation Society Agency

Education ARIN

Upstreams 7 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 5
Upstream graph Who carries AS9270, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS9270 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS9270: 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
AS4766Korea TelecomMobileIPv41,243
AS7660Asia Pacific Advanced Network - JapanUnclassifiedIPv469
AS24490Trans-Eurasia Information Network (TEIN2) - SGUnclassifiedIPv4 IPv624
AS1237KISTIUnclassifiedIPv423
AS23855Singapore Advanced Research and Education NetworkUnclassifiedIPv422
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv620
AS24482SG.GSHostingIPv61

Transit

Downstream networks

inferred

Networks for which AS9270 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS17862Kangwon National UniversityUnclassifiedIPv4139
AS9317INHA UNIVERSITYEducationIPv4102
AS10052Kyungpook National UniversityEducationIPv4 IPv692
AS55616DGISTUnclassifiedIPv439
AS10197Chonnam National UniversityEducationIPv435
AS10063Korea Meteorological AdministrationUnclassifiedIPv42
AS152671SPARCSHostingIPv42

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS9270 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS4766Korea TelecomMobileIPv41,243
AS7660Asia Pacific Advanced Network - JapanUnclassifiedIPv4303
AS23855Singapore Advanced Research and Education NetworkUnclassifiedIPv4 IPv6170
AS17862Kangwon National UniversityUnclassifiedIPv4139
AS9317INHA UNIVERSITYEducationIPv4102
AS10052Kyungpook National UniversityEducationIPv4 IPv692
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv640
AS55616DGISTUnclassifiedIPv439
AS10197Chonnam National UniversityEducationIPv435
AS24490Trans-Eurasia Information Network (TEIN2) - SGUnclassifiedIPv4 IPv632

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-22 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.12M 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.