subnet.im

AS151331Sora You

JapanRegistryAPNICTypeContent

As of 11th November 2026, AS151331 (Sora You), a content network registered in Japan with APNIC, originates 6 IPv6 prefixes. It is seen behind 2 upstream networks, most often AS36530 (IDC Cube) and AS216078 (Liam Kremer), and in front of 1 downstream network. 67% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 67% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

0

IPv6 prefixes

6

IPv4 addresses

0

IPv6 /64s

34M

Upstream graph

The networks AS151331 is seen behind, one and two hops out, drawn from real AS paths.

AS151331Toward the internet core
Upstream graph for AS151331: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS151331Sora YouThis networkAS36530IDC CubeAS216078Liam KremerAS17433Hytron Network Se…AS6939Hurricane Electri…AS50917Diederik Focko de…

Networks observed one and two hops upstream of AS151331 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

6

adjacent networks

Upstreams
233%
Peers
350%
Downstreams
117%

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

Upstreams of AS151331
NetworkCountryRelationshipPathsVantage pts
AS36530IDC CubeUSPeer87463
AS216078Liam KremerDEPeer6363

Prefixes

The largest blocks AS151331 originates, widest first.

Largest prefixes originated by AS151331
PrefixAddressesVisibility
2400:e3e0:aa00::/4016.8M × /6463/63
2400:e3e0:ab00::/4016.8M × /6463/63
2a0f:7802:e100::/46262k × /641/63
2406:840:fed7::/4865.5k × /6462/63
2a0f:7803:e111::/4865.5k × /641/63
2a14:c380:21::/4865.5k × /6463/63

Routing health

How AS151331'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

  • Valid66.7%4
  • Invalid0.0%0
  • No ROA33.3%2

Propagation

  • Globally propagated90% of full-feed peers or more66.7%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%33.3%2

Prefix sizes

IPv6 — 6 prefixes

  • /4016.8M × /6433.3%2
  • /46262k × /6416.7%1
  • /4865.5k × /6450.0%3

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS151331 started or stopped in this period.

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