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AS34878Karlsruhe Institute of Technology

GermanyRegistryRIPE NCC

As of 22nd October 2026, AS34878 (Karlsruhe Institute of Technology), a network registered in Germany with RIPE NCC, originates 4 IPv4 prefixes covering 201k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 1,328th-largest of the 79,663 networks we see originating IPv4, and the 32nd-largest of 2,307 in Germany. It is seen behind 2 upstream networks, most often AS553 (BelWü) and AS680 (Deutsches Forschungsnetz (DFN)), and in front of 2 downstream networks. Every one of its announcements has 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

4

IPv6 prefixes

3

IPv4 addresses

201k

IPv6 /64s

38.7B

Upstream graph

The networks AS34878 is seen behind, one and two hops out, drawn from real AS paths.

AS34878Toward the internet core
Upstream graph for AS34878: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS34878Karlsruhe Institu…This networkAS553BelWüAS680Deutsches Forschu…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS34878 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
225%
Peers
450%
Downstreams
225%

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

Upstreams of AS34878
NetworkCountryRelationshipPathsVantage pts
AS553BelWüDEPeer61494
AS680Deutsches Forschungsnetz (DFN)DEPeer35349

Prefixes

The largest blocks AS34878 originates, widest first.

Largest prefixes originated by AS34878
PrefixAddressesVisibility
129.13.0.0/1665.5k77/77
141.3.0.0/1665.5k77/77
141.52.0.0/1665.5k77/77
193.196.32.0/204.1k77/77
2a00:1398::/2934.4B × /6463/64
2a00:1398::/324.3B × /6463/64
2001:7c0:2310::/441M × /6463/64

Routing health

How AS34878'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

  • Valid100.0%7
  • Invalid0.0%0
  • No ROA0.0%0

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 — 4 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6433.3%1
  • /324.3B × /6433.3%1
  • /441M × /6433.3%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS34878 started or stopped in this period.

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