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AS203446SMARTNET Germany GmbH

GermanyRegistryRIPE NCCTypeCarrier

As of 28th September 2026, AS203446 (SMARTNET Germany GmbH), a transit carrier registered in Germany with RIPE NCC, originates 17 IPv4 prefixes covering 4.4k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 16,612th-largest of the 79,544 networks we see originating IPv4, and the 598th-largest of 2,288 in Germany. It is seen behind 42 upstream networks, most often AS3257 (GTT Communications Inc.) and AS6830 (Liberty Global Europe Holding B.V.), and in front of 28 downstream networks. 91% 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

17

IPv6 prefixes

6

IPv4 addresses

4.4k

IPv6 /64s

269M

Upstream graph

The networks AS203446 is seen behind, one and two hops out, drawn from real AS paths.

AS203446Toward the internet core
Upstream graph for AS203446: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS203446SMARTNET Germany …This networkAS174Cogent Communicat…AS3257GTT Communication…AS5511Orange S.A.AS6461Zayo BandwidthAS6830Liberty Global Eu…AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS398465Rackdog LLCAS6667Elisa OyjAS2914NTT America, Inc.AS32590Valve CorporationAS57866Fusix Networks B.…

Networks observed one and two hops upstream of AS203446 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

271

adjacent networks

Upstreams
4215%
Peers
20174%
Downstreams
2810%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 42.

Upstreams of AS203446
NetworkCountryRelationshipPathsVantage pts
AS3257GTT Communications Inc.USPeer5,604117
AS6830Liberty Global Europe Holding B.V.EUPeer2,73389
AS5511Orange S.A.FRPeer2,14492
AS174Cogent Communications, LLCUSPeer1,83072
AS6461Zayo BandwidthUSPeer1,13823
AS6939Hurricane Electric LLCUSPeer46720
AS7713PT Telkom Indonesia TbkIDPeer4153
AS38880Micron21 Datacentre Pty LtdAUPeer2822
AS24940Hetzner Online GmbHDEPeer2772
AS18106Viewqwest Pte LtdSGPeer2772

Prefixes

The largest blocks AS203446 originates, widest first.

Largest prefixes originated by AS203446
PrefixAddressesVisibility
2.56.246.0/2425682/82
5.83.141.0/2425682/82
37.114.41.0/2425682/82
45.131.65.0/2425682/82
45.134.39.0/2425682/82
45.137.70.0/2425682/82
46.37.101.0/2425682/82
51.241.141.0/2425682/82
64.204.182.0/2425682/82
64.204.203.0/2425681/82

Routing health

How AS203446'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

  • Valid91.3%21
  • Invalid0.0%0
  • No ROA8.7%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%23
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 17 prefixes

IPv6 — 6 prefixes

  • /36268M × /6416.7%1
  • /4865.5k × /6483.3%5

Recent changes

Announcements that started or stopped since 29th Aug 2026.

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