asn.dev

Observed topology

AS6128 CABLE-NET-1 - Cablevision Systems Corp.

Residential DROP-listed space ARIN Cable/DSL/ISP

Upstreams 16 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 23
Adjacent (IPv6) 14
Upstream graph Who carries AS6128, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS6128 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 16

Networks observed carrying traffic for AS6128: 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
AS174Cogent Communications, LLCTransitIPv4 IPv61,098
AS6461Zayo BandwidthTransitIPv4 IPv6928
AS1299Arelion Sweden ABTransitIPv4 IPv6905
AS6939Hurricane Electric LLCTransitIPv4 IPv6839
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6305
AS577Bell CanadaMobileIPv4 IPv6158
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6143
AS9002RETN LimitedUnclassifiedIPv4 IPv6136
AS1273IDDQD-ASBusinessIPv4 IPv691
AS852TELUS Communications Inc.ResidentialIPv4 IPv684

All 16 upstreams →

Transit

Downstream networks

inferred

Networks for which AS6128 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS54004Cablevision Lightpath LLCUnclassifiedIPv4 IPv614,659
AS20940Akamai International B.V.HostingIPv4 IPv6564
AS19720Cablevision Systems Corp.UnclassifiedIPv4527

Adjacency

Adjacent networks

All 23

Every AS seen directly next to AS6128 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS54004Cablevision Lightpath LLCUnclassifiedIPv4 IPv655,545
AS6461Zayo BandwidthTransitIPv4 IPv629,527
AS6939Hurricane Electric LLCTransitIPv4 IPv69,675
AS174Cogent Communications, LLCTransitIPv4 IPv65,902
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv63,042
AS577Bell CanadaMobileIPv4 IPv62,347
AS1299Arelion Sweden ABTransitIPv4 IPv62,099
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv61,951
AS9002RETN LimitedUnclassifiedIPv4 IPv61,511
AS852TELUS Communications Inc.ResidentialIPv4 IPv61,264

All 23 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.