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AS16205DSI GmbH Daten Service Informationssysteme

GermanyRegistryRIPE NCCTypeEyeball

As of 29th September 2026, AS16205 (DSI GmbH Daten Service…), an access network registered in Germany with RIPE NCC, originates 10 IPv4 prefixes covering 16.4k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 7,965th-largest of the 79,607 networks we see originating IPv4, and the 296th-largest of 2,290 in Germany. It is seen behind 30 upstream networks, most often AS3356 (Lumen (Level 3)) and AS13237 (euNetworks GmbH), and in front of 6 downstream networks. 58% 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

10

IPv6 prefixes

2

IPv4 addresses

16.4k

IPv6 /64s

4.3B

Upstream graph

The networks AS16205 is seen behind, one and two hops out, drawn from real AS paths.

AS16205Toward the internet core
Upstream graph for AS16205: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS16205DSI GmbH Daten Se…This networkAS3320Deutsche Telekom …AS3356Lumen (Level 3)AS6939Hurricane Electri…AS12306Plus.line AGAS13237euNetworks GmbHAS13030Init7 (Switzerlan…AS37271Workonline Commun…AS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS33891Core-Backbone GmbHAS1299Arelion (fka. Tel…AS3257GTT Communication…

Networks observed one and two hops upstream of AS16205 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

184

adjacent networks

Upstreams
3016%
Peers
14880%
Downstreams
63%

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

Upstreams of AS16205
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer46858
AS13237euNetworks GmbHDEPeer17017
AS12306Plus.line AGDEPeer16713
AS3320Deutsche Telekom AGDEPeer9414
AS6939Hurricane Electric LLCUSPeer569
AS7713PT Telkom Indonesia TbkIDPeer443
AS24482SG.GSSGPeer313
AS38880Micron21 Datacentre Pty LtdAUPeer302
AS14537Continent 8 LLCUSPeer253
AS34288Kantonsschule ZugCHPeer202

Prefixes

The largest blocks AS16205 originates, widest first.

Largest prefixes originated by AS16205
PrefixAddressesVisibility
81.201.144.0/204.1k82/82
217.18.176.0/204.1k82/82
31.210.160.0/212k82/82
176.52.200.0/212k82/82
178.249.24.0/212k82/82
185.75.184.0/221k82/82
192.109.108.0/2425682/82
194.31.246.0/2425682/82
194.113.71.0/2425682/82
194.180.239.0/2425682/82

Routing health

How AS16205'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

  • Valid58.3%7
  • Invalid0.0%0
  • No ROA41.7%5

Propagation

  • Globally propagated90% of full-feed peers or more100.0%12
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 10 prefixes

IPv6 — 2 prefixes

  • /324.3B × /6450.0%1
  • /4865.5k × /6450.0%1

Recent changes

Announcements that started or stopped since 30th Aug 2026.

No announcement by AS16205 started or stopped in this period.

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