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AS209824Georg Kroeber

GermanyRegistryRIPE NCC

As of 27th September 2026, AS209824 (Georg Kroeber), a network registered in Germany with RIPE NCC, originates 10 IPv4 prefixes covering 2.6k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 23,021st-largest of the 79,525 networks we see originating IPv4, and the 774th-largest of 2,288 in Germany. It is seen behind 10 upstream networks, most often AS33891 (Core-Backbone GmbH) and AS41692 (OpenCarrier eG), and in front of 4 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

10

IPv6 prefixes

3

IPv4 addresses

2.6k

IPv6 /64s

34.4B

Upstream graph

The networks AS209824 is seen behind, one and two hops out, drawn from real AS paths.

AS209824Toward the internet core
Upstream graph for AS209824: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS209824Georg KroeberThis networkAS174Cogent Communicat…AS3320Deutsche Telekom …AS6939Hurricane Electri…AS33891Core-Backbone GmbHAS41692OpenCarrier eGAS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS20130Depaul UniversityAS18106Viewqwest Pte LtdAS24940Hetzner Online Gm…AS6667Elisa Oyj

Networks observed one and two hops upstream of AS209824 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

37

adjacent networks

Upstreams
1027%
Peers
2362%
Downstreams
411%

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

Upstreams of AS209824
NetworkCountryRelationshipPathsVantage pts
AS33891Core-Backbone GmbHDEPeer69949
AS41692OpenCarrier eGDEPeer22814
AS174Cogent Communications, LLCUSPeer21817
AS6939Hurricane Electric LLCUSPeer19643
AS3320Deutsche Telekom AGDEPeer12911
AS5405Inter.link GmbHDEPeer5213
AS47263Jesse RoehslerDEPeer343
AS24940Hetzner Online GmbHDEPeer202
AS47526handily networks GmbHDEPeer142
AS24482SG.GSSGPeer121

Prefixes

The largest blocks AS209824 originates, widest first.

Largest prefixes originated by AS209824
PrefixAddressesVisibility
5.231.72.0/2425680/81
5.231.226.0/2425680/81
77.90.1.0/2425680/81
77.90.29.0/2425680/81
85.209.52.0/2425680/81
85.209.53.0/2425680/81
85.209.54.0/2425680/81
85.209.55.0/2425680/81
91.221.223.0/2425680/81
217.113.54.0/2425680/81

Routing health

How AS209824'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%13
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 10 prefixes

IPv6 — 3 prefixes

  • /3017.2B × /6466.7%2
  • /4865.5k × /6433.3%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn154.197.70.0/2421st Sept 2026

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