Observed topology

AS1741 FUNETAS CSC - Tieteen tietotekniikan keskus Oy

Unclassified RIPE Educational/Research

Upstreams 5 carry this network

Downstreams 8 this network carries

Adjacent (IPv4) 13

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.

AS	Network	Type	Families	Paths seen
AS2603	NORDUnet	Education	IPv4 IPv6	2,270
AS42708	Glesys Sweden AB	Unclassified	IPv4 IPv6	42
AS50304	Blix Solutions AS	Unclassified	IPv4	40
AS12552	GlobalConnect AB	Unclassified	IPv4	16
AS5405	Inter.link GmbH	Unclassified	IPv4	1

Transit

Downstream networks

inferred

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

AS	Network	Type	Families	Paths seen
AS39662	Finnish Transport and Communications Agency	Unclassified	IPv4 IPv6	119
AS1926	Tampere University Foundation	Unclassified	IPv4	118
AS43558	Finnish Transport and Communications Agency	Unclassified	IPv4 IPv6	91
AS565	VTT Technical Research Centre of Finland Ltd	Unclassified	IPv4	59
AS39098	Bank Of Finland	Unclassified	IPv4	59
AS15496	University	Unclassified	IPv4	58
AS207282	HUS Group	Unclassified	IPv4	12
AS39857	Aalto University Student Union	Unclassified	IPv4	2

Adjacency

Adjacent networks

All 13

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

AS	Network	Type	Families	Paths seen
AS2603	NORDUnet	Education	IPv4 IPv6	2,770
AS39662	Finnish Transport and Communications Agency	Unclassified	IPv4 IPv6	119
AS1926	Tampere University Foundation	Unclassified	IPv4	118
AS43558	Finnish Transport and Communications Agency	Unclassified	IPv4 IPv6	91
AS565	VTT Technical Research Centre of Finland Ltd	Unclassified	IPv4	59
AS39098	Bank Of Finland	Unclassified	IPv4	59
AS15496	University	Unclassified	IPv4	58
AS42708	Glesys Sweden AB	Unclassified	IPv4 IPv6	52
AS50304	Blix Solutions AS	Unclassified	IPv4	48
AS12552	GlobalConnect AB	Unclassified	IPv4	16

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M 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.