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AS205103Telegraph42 Management GmbH

GermanyRegistryRIPE NCC

As of 26th September 2026, AS205103 (Telegraph42 Management GmbH), a network registered in Germany with RIPE NCC, originates 1 IPv4 prefix covering 1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 35,810th-largest of the 79,516 networks we see originating IPv4, and the 1,142nd-largest of 2,288 in Germany. It is seen behind 35 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS6461 (Zayo Bandwidth), and in front of 8 downstream networks. Every one of its announcements has 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

1

IPv6 prefixes

1

IPv4 addresses

1k

IPv6 /64s

17.2B

Upstream graph

The networks AS205103 is seen behind, one and two hops out, drawn from real AS paths.

AS205103Toward the internet core
Upstream graph for AS205103: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS205103Telegraph42 Manag…This networkAS2914NTT America, Inc.AS6461Zayo BandwidthAS6939Hurricane Electri…AS7768Nuh Ahmet Firat t…AS35320Eurotranstelecom …AS3130RGnet OUAS49544i3D.net B.VAS32590Valve CorporationAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS1299Arelion (fka. Tel…AS7713PT Telkom Indones…

Networks observed one and two hops upstream of AS205103 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

960

adjacent networks

Upstreams
354%
Peers
91796%
Downstreams
81%

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

Upstreams of AS205103
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer8,54185
AS6461Zayo BandwidthUSPeer4,32936
AS2914NTT America, Inc.USPeer4,18361
AS35320Eurotranstelecom LtdUAPeer1,07011
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer8472
AS8888xTom Pty LtdAUPeer8472
AS7713PT Telkom Indonesia TbkIDPeer8362
AS51907Kanton ZugCHPeer7802
AS8298IPng Networks GmbHCHPeer7712
AS34288Kantonsschule ZugCHPeer4522

Prefixes

The largest blocks AS205103 originates, widest first.

Largest prefixes originated by AS205103
PrefixAddressesVisibility
185.230.68.0/221k81/81
2a0c:500::/3017.2B × /6464/64

Routing health

How AS205103'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

  • Valid100.0%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /3017.2B × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS205103 started or stopped in this period.

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