asn.dev

Observed topology

AS19009 ONECLEVELAND - OneCleveland

Unclassified ARIN

Upstreams 6 carry this network
Downstreams 61 this network carries
Adjacent (IPv4) 66
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 IPv63,182
AS30517Great Lakes Comnet, Inc.UnclassifiedIPv4931
AS1299Arelion Sweden ABTransitIPv4 IPv6566
AS174Cogent Communications, LLCTransitIPv4 IPv6280
AS24482SG.GSHostingIPv4 IPv659
AS20205Amplex Electric, Inc.ResidentialIPv4 IPv655

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 LLCUnclassifiedIPv42,080
AS401333CeraNet, Inc.UnclassifiedIPv4 IPv61,380
AS14230ARK Data Centers LLCUnclassifiedIPv4 IPv61,101
AS19816NCS DataCom, Inc.UnclassifiedIPv41,088
AS22322CABLE CO-OPUnclassifiedIPv4605
AS26306The Karcher Group Inc.UnclassifiedIPv4567
AS27353Indiana University Health Inc.UnclassifiedIPv4442
AS25670thinkCSCUnclassifiedIPv4 IPv6368
AS40593Cloud Compliance SolutionsUnclassifiedIPv4323
AS394985City of Hudson, OhioUnclassifiedIPv4285

All 61 downstreams →

Adjacency

Adjacent networks

All 69

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

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv613,316
AS1299Arelion Sweden ABTransitIPv4 IPv62,135
AS23497NORTH COAST WIRELESS COMMUNICATIONS LLCUnclassifiedIPv42,080
AS14230ARK Data Centers LLCUnclassifiedIPv4 IPv61,506
AS401333CeraNet, Inc.UnclassifiedIPv4 IPv61,380
AS174Cogent Communications, LLCTransitIPv4 IPv61,134
AS19816NCS DataCom, Inc.UnclassifiedIPv41,088
AS30517Great Lakes Comnet, Inc.UnclassifiedIPv4931
AS22322CABLE CO-OPUnclassifiedIPv4605
AS26306The Karcher Group Inc.UnclassifiedIPv4567

All 69 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M 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.