AS59106 Cyber and Internet Association

INET6 - Cyber and Internet Association · registered in Japan

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

Rank in Japan#386largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#14,595of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS59106 in ASN lookup Look up an IP in this network (203.178.12.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

203.178.12.0/24
210.171.160.0/20

IPv6 prefixes

All 1 prefix.

2001:4460::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

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AS55897#388 SAKURA-F - SAKURA Internet Inc.4,352

AS18259#389 HIGE - NTT DOCOMO BUSINESS, Inc4,096

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