asn.dev

Observed topology

AS6128 CABLE-NET-1 - Cablevision Systems Corp.

Residential DROP-listed space ARIN

Upstreams 14 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 20
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 14

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 IPv61,100
AS6461Zayo BandwidthTransitIPv4 IPv6967
AS1299Arelion Sweden ABTransitIPv4 IPv6867
AS6939Hurricane Electric LLCTransitIPv4 IPv6834
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6305
AS9002RETN LimitedUnclassifiedIPv4 IPv6216
AS577Bell CanadaMobileIPv4 IPv6158
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv6143
AS1273IDDQD-ASBusinessIPv4 IPv691
AS852TELUS Communications Inc.ResidentialIPv4 IPv684

All 14 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 IPv614,961
AS20940Akamai International B.V.HostingIPv4 IPv6570
AS19720Cablevision Systems Corp.UnclassifiedIPv4536

Adjacency

Adjacent networks

All 20

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

ASNetworkTypeFamiliesPaths seen
AS54004Cablevision Lightpath LLCUnclassifiedIPv4 IPv656,570
AS6461Zayo BandwidthTransitIPv4 IPv629,503
AS6939Hurricane Electric LLCTransitIPv4 IPv69,667
AS174Cogent Communications, LLCTransitIPv4 IPv65,952
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv63,051
AS9002RETN LimitedUnclassifiedIPv4 IPv62,599
AS577Bell CanadaMobileIPv4 IPv62,357
AS1299Arelion Sweden ABTransitIPv4 IPv62,070
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv61,956
AS852TELUS Communications Inc.ResidentialIPv4 IPv61,271

All 20 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.