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AS204243hfp Informationssysteme GmbH

GermanyRegistryRIPE NCC

As of 27th September 2026, AS204243 (hfp Informationssysteme GmbH), a network registered in Germany with RIPE NCC, originates 1 IPv4 prefix covering 512 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 48,558th-largest of the 79,525 networks we see originating IPv4, and the 1,536th-largest of 2,288 in Germany. It is seen behind 1 upstream network, most often AS33891 (Core-Backbone GmbH). None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

1

IPv4 addresses

512

IPv6 /64s

4.3B

Upstream graph

The networks AS204243 is seen behind, one and two hops out, drawn from real AS paths.

AS204243Toward the internet core
Upstream graph for AS204243: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS204243hfp Informationss…This networkAS33891Core-Backbone GmbHAS6667Elisa OyjAS24940Hetzner Online Gm…

Networks observed one and two hops upstream of AS204243 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS204243
NetworkCountryRelationshipPathsVantage pts
AS33891Core-Backbone GmbHDEPeer145145

Prefixes

The largest blocks AS204243 originates, widest first.

Largest prefixes originated by AS204243
PrefixAddressesVisibility
185.110.12.0/2351281/81
2a01:ab80::/324.3B × /6464/64

Routing health

How AS204243'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%2

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

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Announced185.110.12.0/2322nd Sept 2026
  • Withdrawn185.110.12.0/2221st Sept 2026

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