SUBNET.IM

AS19720Cablevision Systems Corp.

United StatesRegistryARIN

At a glance

IPv4 prefixes

9

IPv6 prefixes

0

IPv4 addresses

2.3k

IPv6 /64s

0

Upstream graph

The networks AS19720 is seen behind, one and two hops out, drawn from real AS paths.

AS19720Toward the internet core
Upstream graph for AS19720: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS19720Cablevision Syste…This networkAS6128Cablevision Syste…AS3356Lumen (Level 3)AS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS19720 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS19720
NetworkCountryRelationshipPathsVantage pts
AS6128Cablevision Systems Corp.USPeer71680

Prefixes

The largest blocks AS19720 originates, widest first.

Largest prefixes originated by AS19720
PrefixAddressesVisibility
65.51.29.0/2425680/80
65.51.31.0/2425680/80
167.206.119.0/2425679/80
167.206.120.0/2425679/80
167.206.122.0/2425679/80
167.206.123.0/2425679/80
216.2.193.0/2425680/80
216.2.194.0/2425680/80
216.2.195.0/2425680/80

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.