AS18128 RIKEN

RIKEN - RIKEN · registered in Japan

IPv4 addresses64,5127 prefixes · 0.002% of announced IPv4

Rank in Japan#162largest network in JP by IPv4 space, of 724 · 0.04% of JP

Rank worldwide#3,527of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS18128 in ASN lookup Look up an IP in this network (134.160.0.1) All networks in Japan

IPv4 prefixes

All 7 prefixes, in address order.

134.160.0.0/17
134.160.128.0/19
134.160.160.0/20
134.160.176.0/21
134.160.184.0/23
134.160.190.0/23
134.160.192.0/18

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS131981#159 TAKUSHOKUNET - Takushoku University65,536

AS18148#160 FUKUOKA-U - Fukuoka University65,024

AS9593#161 NIKKEI - Nikkei Inc.64,512

AS9366#163 SOLITON - SOLITON-NET63,744

AS17686#164 ACCELIA - ACCELIA63,488

AS59127#165 NCV - Newmedia Corporation63,488

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