SUBNET.IM

AS21235ADVANCED Systemhaus GmbH

GermanyRegistryRIPE NCC

At a glance

IPv4 prefixes

3

IPv6 prefixes

1

IPv4 addresses

1.8k

IPv6 /64s

4.3B

Upstream graph

The networks AS21235 is seen behind, one and two hops out, drawn from real AS paths.

AS21235Toward the internet core
Upstream graph for AS21235: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21235ADVANCED Systemha…This networkAS174Cogent Communicat…AS3257GTT Communication…AS12731IPHH Internet Por…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS2497Internet Initiati…AS6667Elisa OyjAS5405Inter.link GmbHAS33891Core-Backbone GmbH

Networks observed one and two hops upstream of AS21235 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS21235
NetworkCountryRelationshipPathsVantage pts
AS12731IPHH Internet Port Hamburg GmbHDEPeer249125
AS3257GTT Communications Inc.USPeer3020
AS174Cogent Communications, LLCUSPeer2214

Prefixes

The largest blocks AS21235 originates, widest first.

Largest prefixes originated by AS21235
PrefixAddressesVisibility
185.65.4.0/221k80/80
194.49.64.0/2351280/80
193.108.193.0/2425680/80
2a03:16e0::/324.3B × /6461/62

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