AS55912 University of Kochi

u-kochi - University of Kochi · registered in Japan

IPv4 addresses4,3522 prefixes · <0.001% of announced IPv4

Rank in Japan#385largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#14,553of 79,396 networks with IPv4

IPv61 x /32 (65,537 x /48)2 prefixes

CountryJapan745 ASNs registered there

Open AS55912 in ASN lookup Look up an IP in this network (103.15.39.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

103.15.39.0/24
222.229.64.0/20

IPv6 prefixes

All 2 prefixes.

2001:df0:2f5::/48
2404:1b00::/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