asn.dev

Observed topology

AS57381 FNUTT

Unclassified RIPE Non-Profit

Upstreams 5 carry this network
Downstreams 26 this network carries
Adjacent (IPv4) 23
Adjacent (IPv6) 23
Upstream graph Who carries AS57381, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS57381 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS57381: 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
AS50304Blix Solutions ASUnclassifiedIPv4 IPv642
AS6939Hurricane Electric LLCTransitIPv4 IPv640
AS42708Glesys ABUnclassifiedIPv49
AS24482SG.GSHostingIPv4 IPv62
AS34927iFog GmbHHostingIPv4 IPv62

Transit

Downstream networks

All 26

Networks for which AS57381 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS13335Cloudflare, Inc.HostingIPv4 IPv62,136
AS6939Hurricane Electric LLCTransitIPv4 IPv6274
AS42708Glesys ABUnclassifiedIPv4 IPv6216
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6104
AS24482SG.GSHostingIPv4 IPv645
AS56655Gigahost ASUnclassifiedIPv4 IPv632
AS8896GLOBALCONNECT ASUnclassifiedIPv4 IPv625
AS12996Domeneshop ASHostingIPv4 IPv624
AS5619Tieto Norway ASUnclassifiedIPv4 IPv622
AS34927iFog GmbHHostingIPv4 IPv618

All 26 downstreams →

Adjacency

Adjacent networks

All 26

Every AS seen directly next to AS57381 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS42708Glesys ABUnclassifiedIPv4 IPv6582,220
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6494,847
AS6939Hurricane Electric LLCTransitIPv4 IPv6235,504
AS13335Cloudflare, Inc.HostingIPv4 IPv68,612
AS24482SG.GSHostingIPv4 IPv6968
AS34927iFog GmbHHostingIPv4 IPv6347
AS56655Gigahost ASUnclassifiedIPv4 IPv6194
AS52025ParadoxNetworks LimitedUnclassifiedIPv4 IPv659
AS39889Fredrik HolmqvistHostingIPv4 IPv657
AS8896GLOBALCONNECT ASUnclassifiedIPv4 IPv640

All 26 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-18 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.