subnet.im

2407:9900:1000::/36

Japan Network Information CenterAS131971

At a glance

Subnets

268,435,456 × /64

/36 block

Visibility

32%

20 of 62 vantage points

RPKI

Invalid

Registry

APNICJP

Allocated 22nd July 2013

AS paths to this prefix

One real path per vantage point, fanning out from the origin. Where two reach the prefix the same way, those hops are drawn once. Open a path to follow it hop by hop.

OriginVantage points
AS path graph: 1 observed path to 2407:9900:1000::/36, fanning out from AS131971 toward the vantage points that see it. Each path is written out in full beneath the graph.AS131971Japan Network Inf…OriginAS2515Japan Network Inf…AS2518BIGLOBE Inc.AS4229Zenlayer IncAS132337Axclusive
  1. Singapore131971251525184229132337This path

Each row is one path genuinely present in the routing table at our last snapshot, read outward from the origin to the vantage point that saw it. Open a row to follow that one path hop by hop.

Route visibility

32%

Seen by 20 of 62 full-feed vantage points

Seen by few vantage points

Observed at 4 of our collectors.

What this percentage counts

The denominator counts only full-feed peers — peers carrying a substantially complete routing table at the moment of the snapshot. IXP route-server peers usually feed partial tables and are excluded, because including them would make a normally propagated prefix look as though half the internet could not see it.

It measures how widely an announcement has spread across the networks we can observe. It says nothing about whether the prefix is reachable from any particular place, or how it performs.

Registry and RPKI

RIR
APNIC — Asia-Pacific
Country
Japan
Allocated
22nd July 2013
Allocation block
2407:9900::/32
Status
allocated
Origin validation
Invalid

A ROA covers this prefix but does not authorise this origin AS at this prefix length. That is either a misconfiguration or a hijack, and many networks will drop the route.

ROAs covering this prefix

Route Origin Authorisations covering 2407:9900:1000::/36
ROA prefixAuthorised originMax length
2407:9900:1000::/36AS2515/36

Prefix hierarchy

Announcements above, below and beside this one in the real routing table.

Covering announcements

No less specific announcement covers this prefix.

More specific announcements

Nothing inside this block is announced separately.

Sibling prefixes

Prefixes of the same length sharing a parent block with 2407:9900:1000::/36
PrefixAddressesOriginVisibility
2407:9900::/36268M × /64AS131971Japan Network Information Center62/62

History

  1. AS13197112th August 2026 — present
Why these dates start where they do

A first-seen date is the first time we saw that origin, not the first time it appeared in BGP. Our history is forward-only with no backfill, so it says nothing about the period before we started collecting — treat the earliest dates with suspicion.

Routing data derived from RouteViews MRT archives and public registry data.