SUBNET.IM

AS21963Agency Insurance Company

United StatesRegistryARIN

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

256

IPv6 /64s

0

Upstream graph

The networks AS21963 is seen behind, one and two hops out, drawn from real AS paths.

AS21963Toward the internet core
Upstream graph for AS21963: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21963Agency Insurance …This networkAS1000LINK AMERICANAS3356Lumen (Level 3)AS33657Comcast Cable Com…AS174Cogent Communicat…AS6453TATA Communicatio…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS7922Comcast Cable Com…

Networks observed one and two hops upstream of AS21963 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

7

adjacent networks

Upstreams
343%
Peers
457%
Downstreams
00%

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

Upstreams of AS21963
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer7272
AS33657Comcast Cable Communications, LLCUSPeer66
AS1000LINK AMERICANUSPeer11

Prefixes

The largest blocks AS21963 originates, widest first.

Largest prefixes originated by AS21963
PrefixAddressesVisibility
63.146.244.0/2425679/80

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