SUBNET.IM

AS21858Ascent Data, LLC

United StatesRegistryARIN

At a glance

IPv4 prefixes

6

IPv6 prefixes

1

IPv4 addresses

3.6k

IPv6 /64s

4.3B

Upstream graph

The networks AS21858 is seen behind, one and two hops out, drawn from real AS paths.

AS21858Toward the internet core
Upstream graph for AS21858: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21858Ascent Data, LLCThis networkAS6461Zayo BandwidthAS11924Montana Opticom, …AS46887Zayo BandwidthAS6667Elisa OyjAS32590Valve CorporationAS3257GTT Communication…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS21858 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
343%
Downstreams
114%

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

Upstreams of AS21858
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer505128
AS46887Zayo BandwidthUSPeer14414
AS11924Montana Opticom, LLCUSPeer287

Prefixes

The largest blocks AS21858 originates, widest first.

Largest prefixes originated by AS21858
PrefixAddressesVisibility
208.70.64.0/212k80/80
208.70.64.0/2351280/80
208.70.64.0/2425680/80
208.70.66.0/2425680/80
208.70.68.0/2425680/80
208.70.71.0/2425680/80
2607:ffa8::/324.3B × /6462/62

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