SoftBank IP Lookup

SoftBank operates the following Autonomous System Numbers (ASNs): AS17676, AS38511. SoftBank operates AS17676 (SoftBank BB) and AS38511 (SoftBank Telecom); SoftBank's dynamic IP allocation for mobile customers means city-level geolocation accuracy is low for its residential and mobile IP blocks. Use our IP lookup tool to identify which specific ASN a SoftBank IP belongs to.

SoftBank holds multiple IP address blocks allocated by its regional internet registry. These blocks are announced via BGP under AS17676 and AS38511. You can identify SoftBank IP addresses using our IP lookup tool — enter any IP and check if the ISP/ASN fields show SoftBank.

Enter the IP address in our IP Lookup tool. The ISP and ASN fields will show whether the IP is registered to SoftBank (look for AS17676 or AS38511). You can also use our WHOIS Lookup to query the IP's network registration directly from the RIR database.

SoftBank provides internet services in: Japan. IP geolocation for SoftBank addresses shows the registered location of the IP block, which may differ from the user's actual city.

SoftBank is a mobile / cellular isp — its customer IPs are generally classified as residential or mobile, not VPN/proxy. However, customers may run VPN servers on SoftBank IP addresses, which can cause individual IPs to be flagged.