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AS7500WIDE Project - M-root

JapanRegistryAPNIC

As of 10th November 2026, AS7500 (WIDE Project - M-root), a network registered in Japan with APNIC, originates 4 IPv4 prefixes covering 1.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 34,021st-largest of the 80,733 networks we see originating IPv4, and the 529th-largest of 737 in Japan. It is seen behind 37 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS3257 (GTT Communications Inc.), and in front of 2 downstream networks. 60% of its announcements have 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

4

IPv6 prefixes

1

IPv4 addresses

1.3k

IPv6 /64s

4.3B

Upstream graph

The networks AS7500 is seen behind, one and two hops out, drawn from real AS paths.

Networks observed one and two hops upstream of AS7500 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

224

adjacent networks

Upstreams
3717%
Peers
18583%
Downstreams
21%

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

Prefixes

The largest blocks AS7500 originates, widest first.

Largest prefixes originated by AS7500
PrefixAddressesVisibility
202.12.26.0/2351272/76
192.50.45.0/2425676/76
202.12.27.0/2425671/76
202.13.183.0/2425676/76
2001:dc3::/324.3B × /6463/63

Routing health

How AS7500'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

  • Valid60.0%3
  • Invalid0.0%0
  • No ROA40.0%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%5
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS7500 started or stopped in this period.

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