AS24284 — CYBERAGENT CyberAgent, Inc.

Network type: hosting

AS24284 announces 4 IPv4 prefixes covering 5,632 addresses and 1 IPv6 prefixes.

About this network

CYBERAGENT is the autonomous system for CyberAgent, Inc., a major Japanese internet content and technology company.

What it's used for

• The address space carries corporate infrastructure, evidenced by reverse DNS entries pointing to node-029064.ext.ameba.jp and similar hostnames, indicating servers for the Ameba platform.
• The AS announces 5632 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, while maintaining 20 observed neighbours; this ratio of moderate address space to a significant number of peering partners suggests a business network with substantial external connectivity rather than a pure transit provider.

Notable

• All registrants for the announced prefixes are listed as Japan Network Information Center (JPNIC) with the netname CYBERAGENT-CIDR-BLK-JP or CYBERAGENT, aligning directly with the AS holder.
• The inventory consists of four distinct IPv4 blocks, including a /20 and a /22, alongside a single /48 IPv6 prefix, reflecting a consolidated corporate estate.

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

Announced prefixes

• 157.112.64.0/20
• 180.233.139.0/24
• 180.233.140.0/22
• 203.80.29.0/24
• 2402:4200:1200::/48

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS2516 KDDI CORPORATION
• AS2519 ARTERIA Networks Corporation
• AS24482 SG.GS
• AS38001 NewMedia Express Pte Ltd
• AS17639 Converge ICT Solutions Inc.
• AS9304 HGC Global Communications Limited

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS2516 KDDI CORPORATION
• AS2519 ARTERIA Networks Corporation
• AS24482 SG.GS
• AS38001 NewMedia Express Pte Ltd
• AS17639 Converge ICT Solutions Inc.
• AS9304 HGC Global Communications Limited

Internet exchanges

• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• JPIX Tokyo — Tokyo, Japan
• Equinix Internet Exchange Tokyo — Tokyo, Japan