subnet.im

AS209329FOCUS 4 U LTD

United KingdomRegistryRIPE NCC

As of 11th November 2026, AS209329 (FOCUS 4 U LTD), a network registered in the United Kingdom with RIPE NCC, originates 1 IPv4 prefix covering 1k addresses. By IPv4 address space that makes it the 36,497th-largest of the 80,747 networks we see originating IPv4, and the 1,058th-largest of 2,122 in the United Kingdom. It is seen behind 1 upstream network, most often AS39545 (Fluidone Ltd.). 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

0

IPv4 addresses

1k

IPv6 /64s

0

Upstream graph

The networks AS209329 is seen behind, one and two hops out, drawn from real AS paths.

AS209329Toward the internet core
Upstream graph for AS209329: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS209329FOCUS 4 U LTDThis networkAS39545Fluidone Ltd.AS3257GTT Communication…AS4455IX Reach Ltd

Networks observed one and two hops upstream of AS209329 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 AS209329
NetworkCountryRelationshipPathsVantage pts
AS39545Fluidone Ltd.GBPeer7676

Prefixes

The largest blocks AS209329 originates, widest first.

Largest prefixes originated by AS209329
PrefixAddressesVisibility
171.22.224.0/221k76/76

Routing health

How AS209329'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

IPv4 — 1 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS209329 started or stopped in this period.

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