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AS197438Julius Birkhofen

GermanyRegistryRIPE NCCTypeEyeball

As of 10th November 2026, AS197438 (Julius Birkhofen), an access network registered in Germany with RIPE NCC, originates 3 IPv6 prefixes. It is seen behind 1 upstream network, most often AS212514 (SpanningNetworks AS). 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

0

IPv6 prefixes

3

IPv4 addresses

0

IPv6 /64s

17.9M

Upstream graph

The networks AS197438 is seen behind, one and two hops out, drawn from real AS paths.

AS197438Toward the internet core
Upstream graph for AS197438: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS197438Julius BirkhofenThis networkAS212514SpanningNetworks …AS6939Hurricane Electri…AS49788Nexthop AS

Networks observed one and two hops upstream of AS197438 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS197438
NetworkCountryRelationshipPathsVantage pts
AS212514SpanningNetworks ASNOPeer18662

Prefixes

The largest blocks AS197438 originates, widest first.

Largest prefixes originated by AS197438
PrefixAddressesVisibility
2a05:4140:2200::/4016.8M × /6462/63
2a0c:9a40:8580::/441M × /6462/63
2a0f:9400:611e::/4865.5k × /6462/63

Routing health

How AS197438'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%3
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 3 prefixes

  • /4016.8M × /6433.3%1
  • /441M × /6433.3%1
  • /4865.5k × /6433.3%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS197438 started or stopped in this period.

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