SUBNET.IM

AS21623Spacelink Systems

United StatesRegistryARIN

At a glance

IPv4 prefixes

4

IPv6 prefixes

1

IPv4 addresses

16.9k

IPv6 /64s

4.3B

Upstream graph

The networks AS21623 is seen behind, one and two hops out, drawn from real AS paths.

AS21623Toward the internet core
Upstream graph for AS21623: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21623Spacelink SystemsThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLC

Networks observed one and two hops upstream of AS21623 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS21623
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer24297
AS174Cogent Communications, LLCUSPeer13548

Prefixes

The largest blocks AS21623 originates, widest first.

Largest prefixes originated by AS21623
PrefixAddressesVisibility
65.50.224.0/198.2k79/80
66.181.0.0/198.2k79/80
38.96.21.0/2425679/80
66.181.22.0/2425679/80
2604:3200::/324.3B × /6461/62

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