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AS215415YUWAN NETWORKS LIMITED

United KingdomRegistryRIPE NCC

As of 26th September 2026, AS215415 (YUWAN NETWORKS LIMITED), a network registered in the United Kingdom with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 59,122nd-largest of the 79,516 networks we see originating IPv4, and the 1,593rd-largest of 2,074 in the United Kingdom. It is seen behind 2 upstream networks, most often AS36530 (IDC Cube) and AS216078 (Liam Kremer). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 86% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

6

IPv4 addresses

256

IPv6 /64s

393k

Upstream graph

The networks AS215415 is seen behind, one and two hops out, drawn from real AS paths.

AS215415Toward the internet core
Upstream graph for AS215415: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS215415YUWAN NETWORKS LI…This networkAS36530IDC CubeAS216078Liam KremerAS17433Hytron Network Se…AS6939Hurricane Electri…AS174Cogent Communicat…

Networks observed one and two hops upstream of AS215415 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 AS215415
NetworkCountryRelationshipPathsVantage pts
AS36530IDC CubeUSPeer32775
AS216078Liam KremerDEPeer6464

Prefixes

The largest blocks AS215415 originates, widest first.

Largest prefixes originated by AS215415
PrefixAddressesVisibility
202.155.153.0/2425612/81
2a14:c380:18::/4865.5k × /6464/64
2a14:c380:1d0::/4865.5k × /6463/64
2a14:c380:1d1::/4865.5k × /6463/64
2a14:c380:1d2::/4865.5k × /6463/64
2a14:c380:1d3::/4865.5k × /6463/64
2a14:c380:1d4::/4865.5k × /6463/64

Routing health

How AS215415'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%7
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more85.7%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%14.3%1

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 6 prefixes

  • /4865.5k × /64100.0%6

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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