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AS203728BAHU LTD

United KingdomRegistryRIPE NCC

As of 11th November 2026, AS203728 (BAHU LTD), a network registered in the United Kingdom with RIPE NCC, originates 2 IPv4 prefixes covering 512 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 49,320th-largest of the 80,747 networks we see originating IPv4, and the 1,392nd-largest of 2,122 in the United Kingdom. It is seen behind 2 upstream networks, most often AS44486 (Oliver Horscht trading as "SYNLINQ") and AS16276 (OVH SAS). 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

2

IPv6 prefixes

1

IPv4 addresses

512

IPv6 /64s

65.5k

Upstream graph

The networks AS203728 is seen behind, one and two hops out, drawn from real AS paths.

AS203728Toward the internet core
Upstream graph for AS203728: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS203728BAHU LTDThis networkAS16276OVH SASAS44486Oliver Horscht tr…AS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS203728 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS203728
NetworkCountryRelationshipPathsVantage pts
AS44486Oliver Horscht trading as "SYNLINQ"DEPeer139139
AS16276OVH SASFRPeer7676

Prefixes

The largest blocks AS203728 originates, widest first.

Largest prefixes originated by AS203728
PrefixAddressesVisibility
82.22.11.0/2425676/76
82.25.45.0/2425676/76
2001:678:90c::/4865.5k × /6463/63

Routing health

How AS203728'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%3
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS203728 started or stopped in this period.

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