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AS197252Colobridge GmbH

GermanyRegistryRIPE NCC

As of 11th November 2026, AS197252 (Colobridge GmbH), a network registered in Germany with RIPE NCC, originates 3 IPv4 prefixes covering 4.1k addresses. By IPv4 address space that makes it the 17,380th-largest of the 80,743 networks we see originating IPv4, and the 624th-largest of 2,331 in Germany. It is seen behind 4 upstream networks, most often AS9002 (RETN Limited) and AS174 (Cogent Communications, LLC), and in front of 2 downstream networks. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

3

IPv6 prefixes

0

IPv4 addresses

4.1k

IPv6 /64s

0

Upstream graph

The networks AS197252 is seen behind, one and two hops out, drawn from real AS paths.

AS197252Toward the internet core
Upstream graph for AS197252: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS197252Colobridge GmbHThis networkAS174Cogent Communicat…AS3326Datagroup PJSCAS9002RETN LimitedAS41095IPTP LTDAS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS6667Elisa OyjAS3356Lumen (Level 3)AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS197252 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

13

adjacent networks

Upstreams
431%
Peers
754%
Downstreams
215%

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

Upstreams of AS197252
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer19346
AS174Cogent Communications, LLCUSPeer8724
AS41095IPTP LTDGBPeer287
AS3326Datagroup PJSCUAPeer41

Prefixes

The largest blocks AS197252 originates, widest first.

Largest prefixes originated by AS197252
PrefixAddressesVisibility
77.72.128.0/212k75/76
185.15.184.0/221k75/76
193.218.144.0/221k75/76

Routing health

How AS197252'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%3

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

IPv4 — 3 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS197252 started or stopped in this period.

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