subnet.im

AS15894LEITWERK AG

GermanyRegistryRIPE NCC

As of 23rd October 2026, AS15894 (LEITWERK AG), a network registered in Germany with RIPE NCC, originates 5 IPv4 prefixes covering 4.9k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 15,836th-largest of the 79,652 networks we see originating IPv4, and the 574th-largest of 2,307 in Germany. It is seen behind 26 upstream networks, most often AS33891 (Core-Backbone GmbH) and AS200924 (Stiegeler Internet Service GmbH), and in front of 2 downstream networks. 86% 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

5

IPv6 prefixes

2

IPv4 addresses

4.9k

IPv6 /64s

4.3B

Upstream graph

The networks AS15894 is seen behind, one and two hops out, drawn from real AS paths.

AS15894Toward the internet core
Upstream graph for AS15894: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS15894LEITWERK AGThis networkAS3320Deutsche Telekom …AS6939Hurricane Electri…AS7713PT Telkom Indones…AS33891Core-Backbone GmbHAS200924Stiegeler Interne…AS13030Init7 (Switzerlan…AS37271Workonline Commun…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6667Elisa OyjAS24940Hetzner Online Gm…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS15894 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

152

adjacent networks

Upstreams
2617%
Peers
12482%
Downstreams
21%

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

Upstreams of AS15894
NetworkCountryRelationshipPathsVantage pts
AS33891Core-Backbone GmbHDEPeer26456
AS200924Stiegeler Internet Service GmbHDEPeer17766
AS3320Deutsche Telekom AGDEPeer12930
AS6939Hurricane Electric LLCUSPeer256
AS7713PT Telkom Indonesia TbkIDPeer213
AS14537Continent 8 LLCUSPeer133
AS49544i3D.net B.VNLPeer102
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer102
AS8298IPng Networks GmbHCHPeer102
AS58511Swoop (Anycast Global Backbone)AUPeer102

Prefixes

The largest blocks AS15894 originates, widest first.

Largest prefixes originated by AS15894
PrefixAddressesVisibility
217.28.96.0/212k77/77
217.28.104.0/221k77/77
217.28.108.0/221k77/77
185.39.14.0/2351277/77
194.41.0.0/2425677/77
2a02:ba8::/324.3B × /6463/64
2001:67c:39c::/4865.5k × /6463/64

Routing health

How AS15894'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

  • Valid85.7%6
  • Invalid0.0%0
  • No ROA14.3%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%7
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 2 prefixes

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

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS15894 started or stopped in this period.

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