AS10003 Ogaki Cable Television Co.,Inc.

OCT-NET - Ogaki Cable Television Co.,Inc. · registered in Japan

IPv4 addresses45,05613 prefixes · 0.001% of announced IPv4

Rank in Japan#184largest network in JP by IPv4 space, of 724 · 0.03% of JP

Rank worldwide#4,101of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS10003 in ASN lookup Look up an IP in this network (61.114.80.1) All networks in Japan

IPv4 prefixes

All 13 prefixes, in address order.

61.114.80.0/20
81.23.208.0/20
103.81.72.0/22
116.90.192.0/20
133.226.32.0/20
154.8.48.0/20
175.158.112.0/20
202.51.32.0/20
202.73.208.0/20
203.133.240.0/21
219.100.148.0/22
219.117.16.0/20
223.165.80.0/20

IPv6 prefixes

All 1 prefix.

2401:d900::/32

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AS18092#185 CSF - Kyushu Tele Communications Company45,056

AS9378#186 CABLENET - JCOM Co., Ltd.45,056

AS23785#187 SUNFIELD - SUN FIELD INTERNET LIMITED45,056

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