AS24572 — YAHOO-JP-AS-AP Yahoo Japan

Network type: hosting

AS24572 announces 4 IPv4 prefixes covering 118,784 addresses and 1 IPv6 prefixes.

About this network

YAHOO-JP-AS-AP is operated by Yahoo Japan.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by the reverse DNS record jailtest03.vip.ops.kks.yahoo.co.jp which points to operational systems within the yahoo.co.jp domain.
• The AS announces 118,784 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, while maintaining only 9 observed neighbours. This high address-to-neighbour ratio, combined with the finely subdivided inventory and consistent registrant data, indicates an internal corporate estate rather than a transit or access network.

Notable

• All registrants for the announced prefixes are consistent with the announcer, listing "Yahoo Japan" and "YAHOO JAPAN" with the IRT contact IRT-YAHOO-JP.
• The address inventory consists of four distinct IPv4 blocks ranging from a /16 to a /20, alongside a single /32 IPv6 prefix, reflecting a segmented internal network structure.

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

Announced prefixes

• 114.110.48.0/20
• 114.111.64.0/18
• 124.83.128.0/17
• 183.79.0.0/16
• 2400:7e00::/32

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS17676 SoftBank Corp.
• AS4713 NTT DOCOMO BUSINESS,Inc.

Downstream networks

• AS24296 LY Corporation

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS24296 LY Corporation
• AS17676 SoftBank Corp.
• AS4713 NTT DOCOMO BUSINESS,Inc.

Internet exchanges

• BroadBand Internet eXchange Osaka — Osaka, Japan
• JPIX Osaka — Osaka, Japan