AS134351 Leaseweb Japan K.K.

LEASEWEB-AS-AP - Leaseweb Japan K.K. · registered in Japan

IPv4 addresses21,24848 prefixes · <0.001% of announced IPv4

Rank in Japan#241largest network in JP by IPv4 space, of 724 · 0.01% of JP

Rank worldwide#5,920of 79,396 networks with IPv4

IPv61 x /32 (65,537 x /48)2 prefixes

CountryJapan745 ASNs registered there

Open AS134351 in ASN lookup Look up an IP in this network (5.188.222.1) All networks in Japan

IPv4 prefixes

All 48 prefixes, in address order.

5.188.222.0/24
23.26.44.0/22
23.26.53.0/24
23.26.61.0/24
23.27.14.0/24
23.27.23.0/24
23.27.127.0/24
23.27.243.0/24
23.81.40.0/21
23.106.224.0/21
45.147.60.0/24
46.202.253.0/24
46.202.255.0/24
46.203.23.0/24
46.203.28.0/24
46.203.45.0/24
46.203.52.0/24
50.114.3.0/24
50.114.92.0/24
64.79.242.0/24
103.254.61.0/24
108.165.81.0/24
108.165.82.0/23
108.165.87.0/24
108.165.180.0/23
142.91.104.0/21
142.111.34.0/24
142.111.67.0/24
142.111.141.0/24
142.111.155.0/24
142.111.208.0/24
166.88.149.0/24
173.234.64.0/22
188.116.6.0/23
194.127.177.0/24
194.127.181.0/24
194.127.183.0/24
194.127.194.0/24
195.40.5.0/24
195.40.12.0/24
195.40.70.0/23
195.40.120.0/22
195.40.160.0/23
195.172.150.0/24
195.172.211.0/24
195.206.110.0/24
198.33.176.0/24
204.217.210.0/24

IPv6 prefixes

All 2 prefixes.

2001:df3:2680::/48
2401:d560::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS24259#238 BC9 - kanuma cable television Corporation21,504

AS17691#239 TikiTiki - NDS Co., Ltd.21,504

AS131925#240 CYBERHOME2 - FAMILY NET JAPAN INCORPORATED21,248

AS132827#242 GATEWAY-AS-AP - GATEWAY INC21,248

AS23777#243 VIPALETTE - NTT BUSINESS SOLUTIONS CORPORATION20,992

AS10012#244 FUSION - Rakuten Mobile, Inc.20,480

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