SUBNET.IM

AS21589City of San Jose

United StatesRegistryARIN

At a glance

IPv4 prefixes

25

IPv6 prefixes

1

IPv4 addresses

10.8k

IPv6 /64s

65.5k

Upstream graph

The networks AS21589 is seen behind, one and two hops out, drawn from real AS paths.

AS21589Toward the internet core
Upstream graph for AS21589: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21589City of San JoseThis networkAS3257GTT Communication…AS6939Hurricane Electri…AS7018AT&T Enterprises,…AS2497Internet Initiati…AS6667Elisa OyjAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS21589 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

8

adjacent networks

Upstreams
338%
Peers
563%
Downstreams
00%

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

Upstreams of AS21589
NetworkCountryRelationshipPathsVantage pts
AS3257GTT Communications Inc.USPeer1,03879
AS6939Hurricane Electric LLCUSPeer939141
AS7018AT&T Enterprises, LLCUSPeer7979

Prefixes

All 26

The largest blocks AS21589 originates, widest first.

Largest prefixes originated by AS21589
PrefixAddressesVisibility
156.39.48.0/212k80/80
156.39.136.0/212k80/80
156.39.64.0/221k79/80
156.39.0.0/2425680/80
156.39.1.0/2425680/80
156.39.2.0/2425680/80
156.39.3.0/2425680/80
156.39.5.0/2425680/80
156.39.10.0/2425680/80
156.39.11.0/2425680/80

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