AS131917 Toshiba I.S. corp

TOSHIBA-IS - Toshiba I.S. corp · registered in Japan

IPv4 addresses1,2805 prefixes · <0.001% of announced IPv4

Rank in Japan#514largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#29,116of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS131917 in ASN lookup Look up an IP in this network (38.106.60.1) All networks in Japan

IPv4 prefixes

All 5 prefixes, in address order.

38.106.60.0/24
103.91.184.0/24
103.147.244.0/24
154.18.65.0/24
154.18.67.0/24

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AS55888#516 Nintatsu - Nintatsu Global Telecommunications Corporation1,152

AS55891#517 WBTSJP-AS - WATCH TOWER BIBLE AND TRACT SOCIETY1,024

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