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AS199436BangLong Yang

JapanRegistryRIPE NCCTypeContent

As of 26th September 2026, AS199436 (BangLong Yang), a content network registered in Japan with RIPE NCC, originates 12 IPv6 prefixes. It is seen behind 2 upstream networks, most often AS151331 (Sora You) and AS216078 (Liam Kremer). 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

0

IPv6 prefixes

12

IPv4 addresses

0

IPv6 /64s

18.7M

Upstream graph

The networks AS199436 is seen behind, one and two hops out, drawn from real AS paths.

AS199436Toward the internet core
Upstream graph for AS199436: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS199436BangLong YangThis networkAS151331Sora YouAS216078Liam KremerAS36530IDC CubeAS174Cogent Communicat…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS199436 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 AS199436
NetworkCountryRelationshipPathsVantage pts
AS151331Sora YouJPPeer69664
AS216078Liam KremerDEPeer6464

Prefixes

The largest blocks AS199436 originates, widest first.

Largest prefixes originated by AS199436
PrefixAddressesVisibility
2a13:b487:1b00::/4016.8M × /6464/64
2406:840:9990::/441M × /6463/64
2602:f864:f04::/47131k × /6463/64
2602:f864:f14::/47131k × /6463/64
2602:f864:ffe::/47131k × /6464/64
2406:840:9991::/4865.5k × /6463/64
2602:f864:f04::/4865.5k × /6463/64
2602:f864:f05::/4865.5k × /6463/64
2602:f864:f14::/4865.5k × /6463/64
2602:f864:f15::/4865.5k × /6463/64

Routing health

How AS199436'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%12
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%12
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 12 prefixes

  • /4016.8M × /648.3%1
  • /441M × /648.3%1
  • /47131k × /6425.0%3
  • /4865.5k × /6458.3%7

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS199436 started or stopped in this period.

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