asn.dev

Observed topology

AS8240 AS8240 Information System Authority

Unclassified APNIC

Upstreams 3 carry this network
Downstreams 12 this network carries
Adjacent (IPv4) 15
Adjacent (IPv6) 6
Upstream graph Who carries AS8240, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS8240 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS8240: 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 ABTransitIPv4 IPv6275
AS1257Tele2 Sverige ABMobileIPv4 IPv652
AS6939Hurricane Electric LLCTransitIPv4 IPv652

Transit

Downstream networks

All 12

Networks for which AS8240 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS206844Riigi Info- ja Kommunikatsioonitehnoloogia KeskusUnclassifiedIPv4 IPv62,083
AS47736IT and Development Center of Ministry of Interior, EstoniaUnclassifiedIPv4 IPv6145
AS62024SIHTASUTUS EESTI TERVISHOIU PILDIPANKUnclassifiedIPv4120
AS56588Information System AuthorityUnclassifiedIPv4 IPv689
AS31081National Audit Office of EstoniaUnclassifiedIPv457
AS203906Sihtasutus Pohja-Eesti RegionaalhaiglaUnclassifiedIPv457
AS1288Packet Clearing House, Inc.UnclassifiedIPv447
AS213172Health and Welfare Information SystemsUnclassifiedIPv446
AS39632Eesti PankUnclassifiedIPv416
AS202480AS Tallinna SadamUnclassifiedIPv416

All 12 downstreams →

Adjacency

Adjacent networks

All 15

Every AS seen directly next to AS8240 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv62,523
AS206844Riigi Info- ja Kommunikatsioonitehnoloogia KeskusUnclassifiedIPv4 IPv62,083
AS1257Tele2 Sverige ABMobileIPv4 IPv6349
AS6939Hurricane Electric LLCTransitIPv4 IPv6201
AS47736IT and Development Center of Ministry of Interior, EstoniaUnclassifiedIPv4 IPv6145
AS62024SIHTASUTUS EESTI TERVISHOIU PILDIPANKUnclassifiedIPv4120
AS56588Information System AuthorityUnclassifiedIPv4 IPv689
AS31081National Audit Office of EstoniaUnclassifiedIPv457
AS203906Sihtasutus Pohja-Eesti RegionaalhaiglaUnclassifiedIPv457
AS1288Packet Clearing House, Inc.UnclassifiedIPv447

All 15 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.