subnet.im

AS397496Inmarsat Government

United StatesRegistryARIN

As of 24th October 2026, AS397496 (Inmarsat Government), a network registered in the United States with ARIN, originates 1 IPv6 prefix. It is seen behind 2 upstream networks, most often AS174 (Cogent Communications, LLC) and AS48152 (Digital Frankfurt GmbH), and in front of 1 downstream network. 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

0

IPv6 prefixes

1

IPv4 addresses

0

IPv6 /64s

65.5k

Upstream graph

The networks AS397496 is seen behind, one and two hops out, drawn from real AS paths.

AS397496Toward the internet core
Upstream graph for AS397496: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS397496Inmarsat Governme…This networkAS174Cogent Communicat…AS48152Digital Frankfurt…AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS397496 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

8

adjacent networks

Upstreams
225%
Peers
563%
Downstreams
113%

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

Upstreams of AS397496
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer1,258133
AS48152Digital Frankfurt GmbHDEPeer7676

Prefixes

The largest blocks AS397496 originates, widest first.

Largest prefixes originated by AS397496
PrefixAddressesVisibility
2001:550:1b0a::/4865.5k × /6458/63

Routing health

How AS397496'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%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%1
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

  • Withdrawn74.84.54.0/246th Oct 2026
  • Withdrawn74.84.57.0/246th Oct 2026
  • Withdrawn74.84.59.0/246th Oct 2026

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