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AS12337noris network AG

GermanyRegistryRIPE NCCTypeEyeball

As of 14th November 2026, AS12337 (noris network AG), an access network registered in Germany with RIPE NCC, originates 79 IPv4 prefixes covering 119k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 2,195th-largest of the 80,840 networks we see originating IPv4, and the 63rd-largest of 2,340 in Germany. It is seen behind 36 upstream networks, most often AS33891 (Core-Backbone GmbH) and AS5405 (Inter.link GmbH), and in front of 28 downstream networks. 73% 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

79

IPv6 prefixes

16

IPv4 addresses

119k

IPv6 /64s

4.3B

Upstream graph

The networks AS12337 is seen behind, one and two hops out, drawn from real AS paths.

AS12337Toward the internet core
Upstream graph for AS12337: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12337noris network AGThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3320Deutsche Telekom …AS5405Inter.link GmbHAS33891Core-Backbone GmbHAS13030Init7 (Switzerlan…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS3491PCCW Global (HK) …AS13237euNetworks GmbHAS6667Elisa OyjAS24940Hetzner Online Gm…

Networks observed one and two hops upstream of AS12337 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

235

adjacent networks

Upstreams
3615%
Peers
17173%
Downstreams
2812%

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

Upstreams of AS12337
NetworkCountryRelationshipPathsVantage pts
AS33891Core-Backbone GmbHDEPeer2,617142
AS5405Inter.link GmbHDEPeer1,989142
AS2914NTT America, Inc.USPeer1,637141
AS1299Arelion (fka. Telia Carrier)SEPeer770142
AS3320Deutsche Telekom AGDEPeer36412
AS13030Init7 (Switzerland) Ltd.CHPeer2564
AS6939Hurricane Electric LLCUSPeer2448
AS7713PT Telkom Indonesia TbkIDPeer2113
AS174Cogent Communications, LLCUSPeer167137
AS20546SOPRADO GmbHDEPeer15678

Prefixes

All 95

The largest blocks AS12337 originates, widest first.

Largest prefixes originated by AS12337
PrefixAddressesVisibility
213.95.0.0/1665.5k78/78
62.128.0.0/198.2k78/78
213.155.64.0/198.2k78/78
213.183.0.0/198.2k78/78
89.250.128.0/204.1k78/78
45.88.236.0/221k78/78
45.146.16.0/221k78/78
185.227.12.0/221k78/78
188.92.112.0/221k78/78
45.91.196.0/2351278/78

Routing health

How AS12337'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

  • Valid72.6%69
  • Invalid0.0%0
  • No ROA27.4%26

Propagation

  • Globally propagated90% of full-feed peers or more100.0%95
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 79 prefixes

IPv6 — 16 prefixes

  • /324.3B × /646.3%1
  • /4016.8M × /6412.5%2
  • /441M × /646.3%1
  • /4865.5k × /6475.0%12

Recent changes

Announcements that started or stopped since 15th Oct 2026.

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