asn.dev

Observed topology

AS1741 FUNETAS

Unclassified RIPE Educational/Research

Upstreams 5 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 4
Upstream graph Who carries AS1741, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS1741 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS1741: 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
AS2603NORDUnetEducationIPv4 IPv62,312
AS42708Glesys ABUnclassifiedIPv4 IPv642
AS50304Blix Solutions ASUnclassifiedIPv440
AS12552GlobalConnect ABUnclassifiedIPv416
AS5405Inter.link GmbHUnclassifiedIPv42

Transit

Downstream networks

inferred

Networks for which AS1741 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS39662Finnish Transport and Communications AgencyUnclassifiedIPv4 IPv6123
AS1926Tampere University FoundationUnclassifiedIPv4120
AS43558Finnish Transport and Communications AgencyUnclassifiedIPv4 IPv693
AS565VTT Technical Research Centre of Finland LtdUnclassifiedIPv460
AS15496UniversityUnclassifiedIPv460
AS39098Bank Of FinlandUnclassifiedIPv460
AS207282HUS GroupUnclassifiedIPv412

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS1741 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2603NORDUnetEducationIPv4 IPv62,822
AS39662Finnish Transport and Communications AgencyUnclassifiedIPv4 IPv6123
AS1926Tampere University FoundationUnclassifiedIPv4120
AS43558Finnish Transport and Communications AgencyUnclassifiedIPv4 IPv693
AS565VTT Technical Research Centre of Finland LtdUnclassifiedIPv460
AS15496UniversityUnclassifiedIPv460
AS39098Bank Of FinlandUnclassifiedIPv460
AS42708Glesys ABUnclassifiedIPv4 IPv652
AS50304Blix Solutions ASUnclassifiedIPv448
AS12552GlobalConnect ABUnclassifiedIPv416

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-25 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.