AS18139 Hitachi Solutions, Ltd.

HISOL-CSV - Hitachi Solutions, Ltd. · registered in Japan

IPv4 addresses1,5365 prefixes · <0.001% of announced IPv4

Rank in Japan#487largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#25,787of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS18139 in ASN lookup Look up an IP in this network (133.108.42.1) All networks in Japan

IPv4 prefixes

All 5 prefixes, in address order.

133.108.42.0/23
133.108.58.0/24
133.108.61.0/24
133.108.63.0/24
219.109.5.0/24

IPv6 prefixes

All 1 prefix.

2406:8e00::/32

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources