asn.dev

Observed topology

AS19009 ONECLEVELAND

Unclassified ARIN NSP

Upstreams 8 carry this network
Downstreams 61 this network carries
Adjacent (IPv4) 67
Adjacent (IPv6) 16
Upstream graph Who carries AS19009, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS19009 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS19009: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv63,047
AS30517Great Lakes Comnet, Inc.UnclassifiedIPv4947
AS1299Arelion Sweden ABTransitIPv4 IPv6699
AS174Cogent Communications, LLCTransitIPv4 IPv6302
AS24482SG.GSHostingIPv4 IPv659
AS20205Amplex Electric, Inc.ResidentialIPv4 IPv656
AS37721Virtual Technologies & SolutionsResidentialIPv453
AS293ESnetUnclassifiedIPv42

Transit

Downstream networks

All 61

Networks for which AS19009 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS23497NORTH COAST WIRELESS COMMUNICATIONS LLCUnclassifiedIPv42,112
AS401333CeraNet, Inc.UnclassifiedIPv4 IPv61,406
AS19816NCS DataCom, Inc.UnclassifiedIPv41,122
AS14230ARK Data Centers LLCUnclassifiedIPv4 IPv61,107
AS22322CABLE CO-OPUnclassifiedIPv4621
AS26306The Karcher Group Inc.UnclassifiedIPv4576
AS27353Indiana University Health Inc.UnclassifiedIPv4455
AS25670thinkCSCUnclassifiedIPv4 IPv6354
AS40593Cloud Compliance SolutionsUnclassifiedIPv4347
AS394985City of Hudson, OhioUnclassifiedIPv4285

All 61 downstreams →

Adjacency

Adjacent networks

All 70

Every AS seen directly next to AS19009 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv613,138
AS1299Arelion Sweden ABTransitIPv4 IPv62,445
AS23497NORTH COAST WIRELESS COMMUNICATIONS LLCUnclassifiedIPv42,112
AS14230ARK Data Centers LLCUnclassifiedIPv4 IPv61,578
AS401333CeraNet, Inc.UnclassifiedIPv4 IPv61,406
AS174Cogent Communications, LLCTransitIPv4 IPv61,170
AS19816NCS DataCom, Inc.UnclassifiedIPv41,122
AS30517Great Lakes Comnet, Inc.UnclassifiedIPv4947
AS22322CABLE CO-OPUnclassifiedIPv4621
AS26306The Karcher Group Inc.UnclassifiedIPv4576

All 70 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M 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.