AS18097 D.C.N. Corporation

DCN - D.C.N. Corporation · registered in Japan

IPv4 addresses10,49610 prefixes · <0.001% of announced IPv4

Rank in Japan#298largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#8,800of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS18097 in ASN lookup Look up an IP in this network (27.109.120.1) All networks in Japan

IPv4 prefixes

All 10 prefixes, in address order.

27.109.120.0/22
103.36.140.0/22
103.83.24.0/22
119.15.144.0/21
123.108.84.0/22
216.179.198.0/23
219.105.32.0/21
219.105.40.0/22
219.105.44.0/24
219.105.46.0/23

IPv6 prefixes

All 1 prefix.

2402:c400::/32

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AS23618#300 ICV-NET - Ibara Broadcasting Company10,240

AS59126#301 NCT - NCT CO.,LTD.10,240

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