AS55900 GLBB Japan KK

GLBB-JP - GLBB Japan KK · registered in Japan

IPv4 addresses52,99229 prefixes · 0.002% of announced IPv4

Rank in Japan#170largest network in JP by IPv4 space, of 724 · 0.03% of JP

Rank worldwide#3,830of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS55900 in ASN lookup Look up an IP in this network (27.0.16.1) All networks in Japan

IPv4 prefixes

All 29 prefixes, in address order.

27.0.16.0/20
43.248.160.0/22
103.7.88.0/22
103.13.248.0/22
103.100.189.0/24
103.100.190.0/23
103.250.92.0/23
103.250.94.0/23
104.222.192.0/20
104.222.208.0/21
104.222.216.0/22
109.236.0.0/20
123.100.136.0/22
123.100.156.0/22
137.220.16.0/20
172.97.80.0/20
180.131.208.0/23
180.131.210.0/24
180.131.211.0/24
180.131.212.0/22
180.131.216.0/21
180.131.224.0/19
198.144.128.0/20
202.12.244.0/23
202.12.246.0/24
202.12.247.0/24
202.171.224.0/21
203.23.200.0/22
218.223.128.0/21

IPv6 prefixes

All 1 prefix.

2404:2d00::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS131918#167 SCN-NET - SHONAN CABLE NETWORK61,440

AS55374#168 FJcloud-East - FUJITSU LIMITED57,088

AS4711#169 INTEC - INTEC Inc.54,272

AS37892#171 WAI-NET - Cable Media WAIWAI Co.,Ltd.52,224

AS23791#172 LCV - LCV Corporation51,200

AS23783#173 CNA - Cable Networks Akita Co.,ltd.50,944

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