asn.dev

Observed topology

AS1097 CORE-TRANSIT - Core Transit LLC

Unclassified ARIN

Upstreams 3 carry this network
Downstreams 16 this network carries
Adjacent (IPv4) 18
Adjacent (IPv6) 11
Upstream graph Who carries AS1097, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS1097 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS1097: 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
AS36236NetActuate, IncHostingIPv4 IPv6542
AS394177SHIFT HOSTING LLCHostingIPv4 IPv6458
AS399951Archous Networks Inc.UnclassifiedIPv4 IPv6227

Transit

Downstream networks

All 16

Networks for which AS1097 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS14872GZ Scientific IncUnclassifiedIPv4912
AS4138FAL NetworksUnclassifiedIPv4 IPv6410
AS53451NetX Internet, LLC.UnclassifiedIPv4121
AS215931BARNA CONSULTING S.A.S.UnclassifiedIPv4 IPv6105
AS402968SpearUnclassifiedIPv4 IPv695
AS402864SlateITUnclassifiedIPv4 IPv687
AS16827Lawton Information Services, LLCUnclassifiedIPv4 IPv683
AS402145Galactic Services, LLCUnclassifiedIPv4 IPv663
AS40911L2Networks Corp.UnclassifiedIPv461
AS402101ALLOY, Inc.UnclassifiedIPv459

All 16 downstreams →

Adjacency

Adjacent networks

All 19

Every AS seen directly next to AS1097 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS36236NetActuate, IncHostingIPv4 IPv62,089
AS394177SHIFT HOSTING LLCHostingIPv4 IPv6957
AS14872GZ Scientific IncUnclassifiedIPv4912
AS4138FAL NetworksUnclassifiedIPv4 IPv6410
AS399951Archous Networks Inc.UnclassifiedIPv4 IPv6311
AS53451NetX Internet, LLC.UnclassifiedIPv4121
AS215931BARNA CONSULTING S.A.S.UnclassifiedIPv4 IPv6105
AS402968SpearUnclassifiedIPv4 IPv695
AS402864SlateITUnclassifiedIPv4 IPv687
AS16827Lawton Information Services, LLCUnclassifiedIPv4 IPv683

All 19 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.