asn.dev

Observed topology

AS30371 AS-GTT-30371

Unclassified ARIN

Upstreams 2 carry this network
Downstreams 2 this network carries
Adjacent (IPv4) 5
Adjacent (IPv6) 2
Upstream graph Who carries AS30371, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS30371 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS30371: 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
AS3257GTT Communications Inc.TransitIPv4 IPv6336
AS16735ALGAR TELECOM S/AUnclassifiedIPv4 IPv6110

Transit

Downstream networks

inferred

Networks for which AS30371 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS397847Flextronics International USA, Inc.UnclassifiedIPv46
AS16740DOXX.NET CORPORATIONUnclassifiedIPv44

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS30371 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3257GTT Communications Inc.TransitIPv4 IPv6348
AS16735ALGAR TELECOM S/AUnclassifiedIPv4 IPv6110
AS397847Flextronics International USA, Inc.UnclassifiedIPv46
AS16740DOXX.NET CORPORATIONUnclassifiedIPv44
AS13786Seabras 1 USA, LLCUnclassifiedIPv42

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-26 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.