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AS4713 NTT DOCOMO BUSINESS,Inc.

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

IPv4 addresses28,623,360177 prefixes · 0.913% of announced IPv4
Rank in Japan#2largest network in JP by IPv4 space, of 724 · 17.74% of JP
Rank worldwide#13of 79,396 networks with IPv4
IPv61,026 x /32 (67,239,937 x /48)21 prefixes
CountryJapan745 ASNs registered there
Open AS4713 in ASN lookup Look up an IP in this network (27.114.0.1) All networks in Japan

IPv4 prefixes

All 177 prefixes, in address order.

  • 27.114.0.0/17
  • 27.132.8.0/24
  • 27.133.240.0/22
  • 36.52.223.0/24
  • 58.88.0.0/13
  • 60.32.0.0/12
  • 61.4.152.0/21
  • 61.4.160.0/20
  • 61.112.0.0/15
  • 61.114.112.0/20
  • 61.118.0.0/15
  • 61.126.0.0/15
  • 61.199.0.0/16
  • 61.207.0.0/16
  • 61.208.0.0/16
  • 61.214.0.0/16
  • 103.163.250.0/23
  • 114.144.0.0/12
  • 114.160.0.0/11
  • 118.0.0.0/12
  • 118.16.0.0/13
  • 119.161.104.0/21
  • 121.112.0.0/13
  • 122.1.0.0/16
  • 122.16.0.0/12
  • 123.216.0.0/13
  • 123.224.0.0/14
  • 124.84.0.0/14
  • 124.96.0.0/13
  • 125.170.0.0/16
  • 125.172.0.0/14
  • 125.200.0.0/13
  • 133.153.0.0/20
  • 133.153.16.0/22
  • 133.153.20.0/23
  • 133.153.22.0/24
  • 133.153.23.0/24
  • 133.153.24.0/21
  • 133.153.32.0/19
  • 133.153.64.0/18
  • 133.153.128.0/17
  • 138.212.224.0/23
  • 138.212.227.0/24
  • 138.212.228.0/23
  • 138.212.230.0/24
  • 138.212.238.0/23
  • 138.212.241.0/24
  • 138.212.245.0/24
  • 138.212.249.0/24
  • 138.212.252.0/24
  • 150.5.64.0/18
  • 150.35.0.0/17
  • 150.35.128.0/18
  • 150.35.192.0/19
  • 150.35.224.0/21
  • 150.35.232.0/22
  • 150.35.236.0/22
  • 150.35.240.0/20
  • 150.61.4.0/24
  • 150.61.8.0/24
  • 150.61.13.0/24
  • 150.61.17.0/24
  • 150.61.31.0/24
  • 150.61.33.0/24
  • 150.61.35.0/24
  • 150.61.41.0/24
  • 150.61.46.0/24
  • 150.61.49.0/24
  • 150.61.53.0/24
  • 150.61.64.0/22
  • 150.61.68.0/23
  • 150.61.70.0/24
  • 150.61.71.0/24
  • 150.61.72.0/21
  • 150.61.80.0/21
  • 150.61.88.0/22
  • 150.61.92.0/23
  • 150.61.95.0/24
  • 150.61.96.0/22
  • 150.61.100.0/23
  • 150.61.103.0/24
  • 150.61.104.0/21
  • 150.61.112.0/20
  • 150.61.128.0/19
  • 150.61.160.0/21
  • 150.61.168.0/22
  • 150.61.173.0/24
  • 150.61.175.0/24
  • 150.61.176.0/20
  • 150.61.192.0/18
  • 153.124.192.0/21
  • 153.128.0.0/10
  • 153.192.0.0/11
  • 153.224.0.0/12
  • 153.240.0.0/13
  • 153.248.0.0/14
  • 153.252.0.0/15
  • 157.64.0.0/16
  • 157.120.124.0/22
  • 159.211.22.0/24
  • 159.211.224.0/24
  • 159.211.237.0/24
  • 159.211.248.0/24
  • 164.43.141.0/24
  • 164.162.4.0/22
  • 164.162.16.0/24
  • 165.108.0.0/16
  • 165.241.0.0/16
  • 180.0.0.0/10
  • 182.161.77.0/24
  • 182.161.78.0/23
  • 198.232.16.0/24
  • 202.18.209.0/24
  • 202.18.210.0/24
  • 202.19.152.0/24
  • 202.34.80.0/22
  • 202.34.90.0/24
  • 202.34.92.0/23
  • 202.34.94.0/24
  • 202.34.100.0/24
  • 202.34.102.0/23
  • 202.34.104.0/24
  • 202.34.106.0/23
  • 202.34.108.0/22
  • 202.157.100.0/22
  • 202.157.112.0/21
  • 202.157.120.0/22
  • 202.157.124.0/23
  • 202.191.16.0/20
  • 202.213.16.0/22
  • 202.216.26.0/24
  • 202.234.192.0/18
  • 202.246.122.0/23
  • 202.246.176.0/22
  • 202.255.27.0/24
  • 202.255.28.0/23
  • 203.139.160.0/19
  • 203.140.96.0/19
  • 210.132.0.0/18
  • 210.134.16.0/20
  • 210.145.0.0/16
  • 210.154.0.0/16
  • 210.160.0.0/14
  • 210.164.0.0/16
  • 210.170.64.0/18
  • 210.171.200.0/21
  • 210.190.0.0/16
  • 210.225.0.0/16
  • 210.226.0.0/15
  • 210.232.0.0/16
  • 210.248.0.0/16
  • 210.254.128.0/17
  • 211.0.0.0/16
  • 211.1.32.0/19
  • 211.6.0.0/16
  • 211.11.0.0/16
  • 211.16.0.0/15
  • 211.122.0.0/15
  • 211.129.0.0/16
  • 211.130.0.0/18
  • 211.130.64.0/19
  • 211.130.128.0/17
  • 218.43.0.0/16
  • 218.44.0.0/16
  • 218.47.0.0/16
  • 218.224.0.0/16
  • 218.230.128.0/17
  • 219.96.128.0/17
  • 219.114.0.0/17
  • 219.160.0.0/13
  • 220.96.0.0/14
  • 220.104.0.0/13
  • 220.220.0.0/15
  • 221.113.128.0/17
  • 221.184.0.0/13
  • 222.144.0.0/13
  • 223.216.0.0/14

IPv6 prefixes

All 21 prefixes.

  • 2001:380::/46
  • 2001:380:4::/48
  • 2001:380:5::/48
  • 2001:380:6::/47
  • 2001:380:8::/45
  • 2001:380:10::/44
  • 2001:380:20::/43
  • 2001:380:40::/42
  • 2001:380:80::/41
  • 2001:380:100::/40
  • 2001:380:200::/39
  • 2001:380:400::/38
  • 2001:380:800::/37
  • 2001:380:1000::/36
  • 2001:380:2000::/35
  • 2001:380:4000::/34
  • 2001:380:8000::/33
  • 2400:4000::/22
  • 2400:7800::/32
  • 2407:a800:3e11:111a::/64
  • 2407:a800:3e12::/48

Other ASNs named NTT DOCOMO BUSINESS,Inc.

7 other networks use the same organisation name; together with AS4713 they announce 28,644,864 IPv4 addresses.

ASNNameIPv4 addresses
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
AS18131DXNW - NTT DOCOMO BUSINESS, Inc. JP256
AS38629OKN - NTT DOCOMO BUSINESS, Inc JP256

Similar-sized networks in Japan

ASNNameIPv4 addresses
AS17676#1 GIGAINFRA - SoftBank Corp.38,445,056
AS2516#3 KDDI - KDDI CORPORATION18,072,320
AS2907#4 SINET-AS - Research Organization of Information and Systems, National Institute of Informatics8,765,504
AS17506#5 UCOM - ARTERIA Networks Corporation5,382,143

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