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thenetworkery

AS numbers

AS218640 KC-AS Kansei CHIBA

AS218640 is operated by KC-AS Kansei CHIBA and registered with RIPE NCC (JP) since 2026-09-17.

It announces 0 IPv4 and 1 IPv6 prefixes, 100% of them RPKI valid.

RIPE RIS sees 2 upstream and peer networks and 0 downstream networks next to it.

NameKC-AS Kansei CHIBA
Registry (RIR)RIPE NCC
CountryJapan (JP)
Delegated on2026-09-17
Prefixes (IPv4 / IPv6)0 / 1
RPKI valid100% (1 / 1)
Upstreams and peers2
Downstream networks0

Routing health

  • AS218640 announces 0 IPv4 and 1 IPv6 prefixes.
  • All 1 announced prefixes are RPKI valid.
  • 2 upstreams and peers, 0 downstream networks seen.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

Announced prefixes 1

  • 2a14:7583:efd3::/48

Upstreams and peers 2

The networks RIPE RIS sees next to AS218640 in BGP paths, the most visible first.

More about AS218640

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-15 16:47 UTC. The country is where the AS number was registered, not necessarily where the network operates.