AS18259 NTT DOCOMO BUSINESS, Inc

HIGE - NTT DOCOMO BUSINESS, Inc · registered in Japan

IPv4 addresses4,0965 prefixes · <0.001% of announced IPv4

Rank in Japan#389largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#14,987of 79,396 networks with IPv4

IPv61 x /32 (65,791 x /48)17 prefixes

CountryJapan745 ASNs registered there

Open AS18259 in ASN lookup Look up an IP in this network (202.178.96.1) All networks in Japan

IPv4 prefixes

All 5 prefixes, in address order.

202.178.96.0/21
202.178.104.0/24
202.178.105.0/24
202.178.106.0/23
202.178.108.0/22

IPv6 prefixes

All 17 prefixes.

2001:218:2200::/40
2401:4640::/40
2401:4640:100::/42
2401:4640:140::/43
2401:4640:160::/44
2401:4640:171::/48
2401:4640:172::/47
2401:4640:174::/46
2401:4640:178::/45
2401:4640:180::/41
2401:4640:200::/39
2401:4640:400::/38
2401:4640:800::/37
2401:4640:1000::/36
2401:4640:2000::/35
2401:4640:4000::/34
2401:4640:8000::/33

Other ASNs named NTT DOCOMO BUSINESS, Inc

7 other networks use the same organisation name; together with AS18259 they announce 28,644,864 IPv4 addresses.

ASNNameIPv4 addresses

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

AS38639HANABI - NTT DOCOMO BUSINESS, Inc. JP13,312

AS7674GOFORS - NTT DOCOMO BUSINESS, Inc JP1,280

AS18072STREAMWING - NTT DOCOMO BUSINESS, Inc. JP1,280

AS37900MATSURI - NTT DOCOMO BUSINESS, Inc. JP1,024

AS18131DXNW - NTT DOCOMO BUSINESS, Inc. JP256

AS38629OKN - NTT DOCOMO BUSINESS, Inc JP256

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS59106#386 INET6 - Cyber and Internet Association4,352

AS37914#387 Univnet - Advanced Software Technology and Management Research Institute of KYOTO4,352

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

AS18074#390 FRT - FRT Inc.4,096

AS23836#391 RELNET - RELATION Co., Ltd.4,096

AS24477#392 NETAPPAS - NetApp, Inc.4,096

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