AS4730 Osaka University

ODINS - Osaka University · registered in Japan

IPv4 addresses67,5842 prefixes · 0.002% of announced IPv4

Rank in Japan#102largest network in JP by IPv4 space, of 724 · 0.04% of JP

Rank worldwide#2,564of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS4730 in ASN lookup Look up an IP in this network (133.1.0.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

133.1.0.0/16
192.50.0.0/21

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS7672#99 FITWEB - Hokuden Information System Service Co.,Ltd.68,352

AS55391#100 MF-NATIVE6-E - INTERNET MULTIFEED CO.67,584

AS55392#101 MF-NATIVE6-W - INTERNET MULTIFEED CO.67,584

AS17961#103 MITENE - mitene internet co., ltd.67,072

AS18268#104 JANIS - Naganoken Kyodou Densan Co.Ltd.67,072

AS38634#105 DWANGO - DWANGO Co.,Ltd.67,072

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