How accurate is IP geolocation in Japan?

IP geolocation in Japan is highly accurate — 99%+ at the country level and approximately 85-90% at the city/ward level. Major metro areas like Tokyo, Osaka, and Yokohama have excellent coverage due to dense ISP infrastructure.

Can I check a Japanese IP address for free?

Yes. Visit https://iplocatortools.com/ip-location-japan to instantly see the public IP, city, prefecture (県), ISP, and coordinates on our interactive map.

What are the main ISPs in Japan?

NTT Communications (OCN/Plala), So-net (Sony), au Hikari (KDDI), Nifty (Fujitsu), and BIGLOBE are among the largest ISPs providing fibre and DSL internet across Japan.

Does Japan have good IPv6 adoption?

Yes. Japan is one of the global leaders in IPv6 adoption, driven by the rapid expansion of fibre-to-the-home (FTTH) and mobile 5G networks. Many major ISPs enable IPv6 by default on new connections.

IP Address Location Japan

Instantly check your public IP address location in Japan. See your city, prefecture, ISP, and coordinates plotted on our interactive map. Look up any Japanese IP for free.

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IP Geolocation & Network Routing in Japan

IP address allocation and routing in Japan are managed by regional internet registries (such as APNIC for Asia-Pacific or RIPE NCC for Europe) and local internet service provider configurations. The accuracy of city-level IP geolocation in Japan is generally very high—exceeding 90% for fixed-line broadband connections and around 70-80% for cellular networks.

The largest telecommunication networks and ISPs in Japan include NTT Communications (OCN/Plala), So-net (Sony), au Hikari (KDDI), Nifty (Fujitsu), and BIGLOBE. When checking an IP from these network blocks on IPLocatorTools, you can instantly trace its registered Autonomous System Number (ASN), ISP organization details, and physical geographical coordinates plotted on our dark-styled map.

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