AS17505 SoftBank Corp.

SBmobile - SoftBank Corp. · registered in Japan

IPv4 addresses6,6567 prefixes · <0.001% of announced IPv4

Rank in Japan#346largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#11,850of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS17505 in ASN lookup Look up an IP in this network (117.46.4.1) All networks in Japan

IPv4 prefixes

All 7 prefixes, in address order.

117.46.4.0/22
117.46.8.0/21
117.46.16.0/22
123.108.236.0/22
202.179.203.0/24
202.179.204.0/24
202.253.96.0/22

Other ASNs named SoftBank Corp.

4 other networks use the same organisation name; together with AS17505 they announce 40,377,344 IPv4 addresses.

ASNNameIPv4 addresses

AS17676GIGAINFRA - SoftBank Corp. JP38,445,056

AS4725ODN - SoftBank Corp. JP1,918,976

AS146969SBT-SC - SoftBank Corp. JP6,400

AS18069SOFTBANK - SoftBank Corp. JP256

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS131960#343 MBO-NET - MBO holdings Inc.7,680

AS17693#344 NEKONET - YAMATO SYSTEM DEVELOPMENT CO., LTD.7,168

AS17948#345 EditNet - EditNet, Incorporated7,168

AS38638#347 IP-CORE - Ip Core Corporation6,656

AS55376#348 KCV-HitaNet - KCV Communications Co. Ltd.6,656

AS146969#349 SBT-SC - SoftBank Corp.6,400

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