AS18131 NTT DOCOMO BUSINESS, Inc.

DXNW - NTT DOCOMO BUSINESS, Inc. · registered in Japan

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Japan#655largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#61,087of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryJapan745 ASNs registered there

Open AS18131 in ASN lookup Look up an IP in this network (192.47.166.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

192.47.166.0/24

IPv6 prefixes

All 1 prefix.

2001:df4:1f80::/48

Other ASNs named NTT DOCOMO BUSINESS, Inc.

7 other networks use the same organisation name; together with AS18131 they announce 28,644,864 IPv4 addresses.

ASNNameIPv4 addresses

AS4713OCN - NTT DOCOMO BUSINESS,Inc. JP28,623,360

AS38639HANABI - NTT DOCOMO BUSINESS, Inc. JP13,312

AS18259HIGE - NTT DOCOMO BUSINESS, Inc JP4,096

AS7674GOFORS - NTT DOCOMO BUSINESS, Inc JP1,280

AS18072STREAMWING - NTT DOCOMO BUSINESS, Inc. JP1,280

AS37900MATSURI - NTT DOCOMO BUSINESS, Inc. JP1,024

AS38629OKN - NTT DOCOMO BUSINESS, Inc JP256

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS214968#652 KNEE-NET-AS JIANG Zhirui256

AS150368#653 TESTBED-KLN - SERVER-G Group256

AS9609#654 BBIX-CDN - BBIX, Inc.256

AS23642#656 OBIS - OBIS256

AS24287#657 TEIN2-JP - National Institute of Informatics256

AS38629#658 OKN - NTT DOCOMO BUSINESS, Inc256

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