Autonomous system
AS24284 CYBERAGENT CyberAgent, Inc.
Hosting ARIN Content
Summary
CyberAgent
business content japan
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.jpand 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-JPorCYBERAGENT, 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.45 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.47 |
| Equinix Internet Exchange Tokyo | Tokyo, Japan | 2001:de8:5::2:4284:1 |
Transit providers
8 upstream, 0 downstream and 12 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 5.63K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS24284- Registry name
- CYBERAGENT
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2004-10-19
- Last changed
- 2019-11-19
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- CyberAgent,Inc.
- Network type
- Content
- Scope
- Asia Pacific
- Traffic ratio
- Mostly Outbound
- Peering policy
- Selective
- IRR as-set
AS-CYBERAGENT-NET- Present at
- 4 exchanges
- Facilities
- 3 facilities
- Website
- http://www.cyberagent.co.jp/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 9 valid, 0 with no ROA
- ROAs
- 5 authorising AS24284
- ASPA
- no ASPA record
- IRR
- 22% registered · 2 of 9 announcements
- Route objects
- 2 naming AS24284
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 446 networks and 1,852 prefixes, as published 2026-10-27. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere