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AS38639 NTT DOCOMO BUSINESS, Inc.

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

IPv4 addresses13,3127 prefixes · <0.001% of announced IPv4
Rank in Japan#285largest network in JP by IPv4 space, of 724 · <0.01% of JP
Rank worldwide#7,812of 79,396 networks with IPv4
IPv665,533 x /4830 prefixes
CountryJapan745 ASNs registered there
Open AS38639 in ASN lookup Look up an IP in this network (103.2.128.1) All networks in Japan

IPv4 prefixes

All 7 prefixes, in address order.

  • 103.2.128.0/22
  • 115.69.224.0/21
  • 163.138.224.0/19
  • 220.150.192.0/22
  • 220.150.196.0/24
  • 220.150.197.0/24
  • 220.150.198.0/23

IPv6 prefixes

All 30 prefixes.

  • 2402:c800::/33
  • 2402:c800:8000::/34
  • 2402:c800:c000::/37
  • 2402:c800:c800::/39
  • 2402:c800:ca00::/41
  • 2402:c800:ca80::/42
  • 2402:c800:cac0::/43
  • 2402:c800:cae0::/44
  • 2402:c800:caf0::/45
  • 2402:c800:caf8::/46
  • 2402:c800:cafc::/47
  • 2402:c800:cafe::/48
  • 2402:c800:caff::/48
  • 2402:c800:cb00::/40
  • 2402:c800:cc00::/38
  • 2402:c800:d000::/36
  • 2402:c800:e000::/36
  • 2402:c800:f000::/37
  • 2402:c800:f800::/38
  • 2402:c800:fc00::/39
  • 2402:c800:fe00::/40
  • 2402:c800:ff00::/41
  • 2402:c800:ff80::/42
  • 2402:c800:ffc0::/43
  • 2402:c800:ffe0::/44
  • 2402:c800:fff0::/48
  • 2402:c800:fff2::/48
  • 2402:c800:fff4::/47
  • 2402:c800:fff7::/48
  • 2402:c800:fff8::/45

Other ASNs named NTT DOCOMO BUSINESS, Inc.

7 other networks use the same organisation name; together with AS38639 they announce 28,644,864 IPv4 addresses.

ASNNameIPv4 addresses
AS4713OCN - NTT DOCOMO BUSINESS,Inc. JP28,623,360
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
AS18131DXNW - NTT DOCOMO BUSINESS, Inc. JP256
AS38629OKN - NTT DOCOMO BUSINESS, Inc JP256

Similar-sized networks in Japan

ASNNameIPv4 addresses
AS63997#282 TSUKAERUNET - Tsukaeru.net, Web Hosting Company, Japan13,568
AS7677#283 DNP - Dai Nippon Printing Co., Ltd13,568
AS24295#284 AS-PNAPOSK - PacketFabric (Japan) Co., Ltd.13,312
AS18070#286 NDAC - Global Network Core Co.,Ltd.13,056
AS58650#287 CATVWINK - Warabi Cable Vision Co., Ltd.12,800
AS23628#288 ACCSnet - Academic newtown Community Cable Service12,288

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