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AS12643Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

GermanyRegistryRIPE NCC

As of 22nd October 2026, AS12643 (Fraunhofer-Gesellschaft zur Foerderung…), a network registered in Germany with RIPE NCC, originates 5 IPv4 prefixes covering 70.1k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 3,095th-largest of the 79,663 networks we see originating IPv4, and the 93rd-largest of 2,307 in Germany. It is seen behind 2 upstream networks, most often AS8365 (Man-da.de GmbH) and AS680 (Deutsches Forschungsnetz (DFN)). 71% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

5

IPv6 prefixes

2

IPv4 addresses

70.1k

IPv6 /64s

131k

Upstream graph

The networks AS12643 is seen behind, one and two hops out, drawn from real AS paths.

AS12643Toward the internet core
Upstream graph for AS12643: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12643Fraunhofer-Gesell…This networkAS680Deutsches Forschu…AS8365Man-da.de GmbHAS3356Lumen (Level 3)AS2914NTT America, Inc.AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS12643 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 AS12643
NetworkCountryRelationshipPathsVantage pts
AS8365Man-da.de GmbHDEPeer472131
AS680Deutsches Forschungsnetz (DFN)DEPeer4110

Prefixes

The largest blocks AS12643 originates, widest first.

Largest prefixes originated by AS12643
PrefixAddressesVisibility
146.140.0.0/1665.5k77/77
192.67.200.0/212k77/77
153.96.244.0/221k77/77
192.44.32.0/221k77/77
129.233.208.0/2351277/77
2001:67c:134::/4865.5k × /6464/64
2a03:db80:3410::/4865.5k × /6464/64

Routing health

How AS12643's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid71.4%5
  • Invalid0.0%0
  • No ROA28.6%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%7
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS12643 started or stopped in this period.

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