AS17953 BroadBand Security, Inc.

ICO - BroadBand Security, Inc. · registered in Japan

IPv4 addresses3,8404 prefixes · <0.001% of announced IPv4

Rank in Japan#417largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#16,553of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS17953 in ASN lookup Look up an IP in this network (218.223.0.1) All networks in Japan

IPv4 prefixes

All 4 prefixes, in address order.

218.223.0.0/21
218.223.8.0/22
218.223.12.0/23
218.223.15.0/24

IPv6 prefixes

All 1 prefix.

2404:7a00::/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