AS17505 — SBMOBILE SoftBank Corp.

AS17505 announces 7 IPv4 prefixes covering 6,656 addresses and 0 IPv6 prefixes.

About this network

SBMOBILE is operated by SoftBank Corp., a major Japanese mobile telecommunications provider.

What it's used for

• The address space carries mobile subscriber traffic, evidenced by netnames SOFTBANK and VODAFONE-CIDR-BLK-JP assigned to prefixes such as 117.46.8.0/21 and 202.253.96.0/22.
• With 6656 IPv4 addresses announced across 7 prefixes and only 2 observed neighbours, the high address-to-neighbour ratio indicates an access network serving end-users rather than a transit provider.

Notable

• Registrants for all prefixes are listed as Japan Network Information Center with IRT contact IRT-JPNIC-JP, which is consistent with the AS holder SoftBank Corp.
• The inventory consists of a mix of /21, /22, and /24 blocks, including a block with the netname VODAFONE-CIDR-BLK-JP, reflecting historical spectrum or address space consolidation within the SoftBank group.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 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

Upstream networks

• AS4725 SoftBank Corp.
• AS17676 SoftBank Corp.

Adjacent networks

• AS4725 SoftBank Corp.
• AS17676 SoftBank Corp.