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Data: RIPE NCC, ARIN, APNIC, LACNIC, AFRINIC delegated statistics · CAIDA · RIPEstat · World Bank.

Last sync: 2026-06-08 03:01 UTC · refreshed daily

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AS9355 NICT - National Institute of Information and Communications Technology

Japan · Autonomous System

IPv4 announced

131.1K

0.01 × /8

IPv6 announced

/48 blocks

Prefixes

routed

Country

Japan

Routing hygiene & RPKI

How well this network secures and documents its BGP announcements — RPKI origin validation, IRR registration, and an overall hygiene score.

Hygiene score

0–100 · RPKI × IRR × consistency

RPKI coverage

50%

65.5K of 131.1K routed addrs valid

RPKI invalid

no invalid prefixes

IRR registered

0 of 3 prefixes documented

Announcement composition3 routed prefixes

RPKI valid only 33.3%Unregistered 66.7%

RPKI by address family

ipv4RPKI 50%

1 valid0 invalid1 not found65.5K / 131.1K addrs

ipv6RPKI 0%

0 valid0 invalid1 not found0 / 1 addrs

IPv6 deployment

Measured share of this network's users reaching the Internet over IPv6 (APNIC end-user measurement, Japan).

IPv6 capable

0.0%

users that can reach IPv6-only content

IPv6 preferred

0.0%

users that use IPv6 when both are offered

Capable0.0%

Has working IPv6 connectivity, even if it isn't always chosen.

Preferred0.0%

IPv6 wins when a destination is dual-stacked — the real-world usage rate.

Announced prefixes

Currently announced prefixes, live from RIPEstat.

3 prefixes currently seen by RIPEstat.

133.243.0.0/162001:df0:232::/48133.140.0.0/16

Fetching announced prefixes from RIPEstat…

3 prefixes currently seen by RIPEstat.

133.243.0.0/162001:df0:232::/48133.140.0.0/16