subnet.im

AS146986SUZUYO SHINWART CORPORATION

JapanRegistryAPNIC

As of 11th November 2026, AS146986 (SUZUYO SHINWART CORPORATION), a network registered in Japan with APNIC, originates 1 IPv4 prefix covering 256 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 59,982nd-largest of the 80,747 networks we see originating IPv4, and the 647th-largest of 737 in Japan. It is seen behind 2 upstream networks, most often AS55900 (GLBB Japan KK) and AS2519 (ARTERIA Networks Corporation), and in front of 2 downstream networks. 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

1

IPv6 prefixes

1

IPv4 addresses

256

IPv6 /64s

16.8M

Upstream graph

The networks AS146986 is seen behind, one and two hops out, drawn from real AS paths.

AS146986Toward the internet core
Upstream graph for AS146986: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS146986SUZUYO SHINWART C…This networkAS2519ARTERIA Networks …AS55900GLBB Japan KKAS3356Lumen (Level 3)AS2497Internet Initiati…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS146986 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

8

adjacent networks

Upstreams
225%
Peers
450%
Downstreams
225%

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

Upstreams of AS146986
NetworkCountryRelationshipPathsVantage pts
AS55900GLBB Japan KKJPPeer1,23676
AS2519ARTERIA Networks CorporationJPPeer205108

Prefixes

The largest blocks AS146986 originates, widest first.

Largest prefixes originated by AS146986
PrefixAddressesVisibility
133.88.28.0/2425676/76
2405:25c0:a400::/4016.8M × /6462/63

Routing health

How AS146986'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%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /4016.8M × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS146986 started or stopped in this period.

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