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AS7506 GMO Internet, Inc.

GMO-I-R1 - GMO Internet, Inc. · registered in Japan

IPv4 addresses252,67273 prefixes · 0.008% of announced IPv4
Rank in Japan#38largest network in JP by IPv4 space, of 724 · 0.16% of JP
Rank worldwide#928of 79,396 networks with IPv4
IPv64,101 x /486 prefixes
CountryJapan745 ASNs registered there
Open AS7506 in ASN lookup Look up an IP in this network (103.3.188.1) All networks in Japan

IPv4 prefixes

All 73 prefixes, in address order.

  • 103.3.188.0/22
  • 118.27.0.0/18
  • 118.27.64.0/20
  • 118.27.80.0/21
  • 118.27.88.0/22
  • 118.27.92.0/23
  • 118.27.95.0/24
  • 118.27.96.0/20
  • 118.27.112.0/21
  • 118.27.120.0/22
  • 118.27.124.0/24
  • 118.27.125.0/24
  • 118.27.126.0/23
  • 133.130.16.0/20
  • 133.130.32.0/19
  • 133.130.64.0/18
  • 150.95.32.0/20
  • 150.95.48.0/21
  • 150.95.56.0/22
  • 150.95.60.0/22
  • 150.95.128.0/18
  • 150.95.192.0/20
  • 150.95.208.0/21
  • 150.95.216.0/22
  • 150.95.220.0/22
  • 150.95.224.0/20
  • 150.95.240.0/21
  • 150.95.248.0/23
  • 150.95.250.0/23
  • 150.95.252.0/22
  • 157.7.36.0/22
  • 157.7.40.0/21
  • 157.7.48.0/20
  • 157.7.64.0/19
  • 157.7.96.0/21
  • 157.7.104.0/21
  • 157.7.112.0/21
  • 157.7.128.0/20
  • 157.7.144.0/21
  • 157.7.152.0/21
  • 157.7.160.0/19
  • 157.7.192.0/19
  • 157.7.224.0/21
  • 157.7.232.0/21
  • 157.7.240.0/20
  • 160.251.0.0/18
  • 160.251.64.0/22
  • 160.251.68.0/22
  • 160.251.72.0/21
  • 160.251.80.0/22
  • 160.251.88.0/21
  • 160.251.96.0/19
  • 163.44.72.0/21
  • 163.44.80.0/21
  • 163.44.88.0/22
  • 163.44.92.0/23
  • 163.44.94.0/23
  • 163.44.160.0/20
  • 163.44.176.0/23
  • 163.44.178.0/23
  • 163.44.180.0/22
  • 163.44.184.0/22
  • 163.44.188.0/22
  • 163.44.224.0/19
  • 203.189.96.0/20
  • 210.157.0.0/19
  • 210.172.128.0/19
  • 210.172.160.0/20
  • 210.172.176.0/21
  • 210.253.96.0/19
  • 211.125.64.0/20
  • 211.125.88.0/22
  • 211.125.92.0/22

IPv6 prefixes

All 6 prefixes.

  • 2400:8500:1000::/36
  • 2400:8500:6703::/48
  • 2400:8500:9d07::/48
  • 2400:8500:cbbd::/48
  • 2400:8500:d29d::/48
  • 2400:8500:d37d::/48

Other ASNs named GMO Internet, Inc.

4 other networks use the same organisation name; together with AS7506 they announce 340,992 IPv4 addresses.

ASNNameIPv4 addresses
AS58791GMO-I-R2 - GMO Internet, Inc. JP86,784
AS55907GMO-DNS-R1 - GMO Internet, Inc. JP1,024
AS58649GMO-REG-R1 - GMO Internet, Inc. JP256
AS58651GMO-REG-R2 - GMO Internet, Inc. JP256

Similar-sized networks in Japan

ASNNameIPv4 addresses
AS9371#35 SAKURA-C - SAKURA Internet Inc.297,216
AS18144#36 AS-ENECOM - Enecom,Inc.291,840
AS9597#37 CPI-NET - KDDI Web Communications Inc.276,736
AS9351#39 ZLAN - ZTV CO.,LTD249,856
AS4673#40 INTERVIA - NTT DATA CORPORATION241,664
AS2522#41 PPP-EXP - Japan Network Information Center229,120

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