AS17958 Kasaoka Cable Vision Co,LTD.

KCV - Kasaoka Cable Vision Co,LTD. · registered in Japan

IPv4 addresses21,5047 prefixes · <0.001% of announced IPv4

Rank in Japan#237largest network in JP by IPv4 space, of 724 · 0.01% of JP

Rank worldwide#5,870of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS17958 in ASN lookup Look up an IP in this network (103.2.96.1) All networks in Japan

IPv4 prefixes

All 7 prefixes, in address order.

103.2.96.0/22
133.226.160.0/20
157.112.160.0/20
180.178.80.0/21
218.40.96.0/20
219.103.48.0/20
220.247.184.0/21

IPv6 prefixes

All 1 prefix.

2401:a240::/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