Autonomous system
AS24572 YAHOO-JP-AS-AP Yahoo Japan
Hosting ARIN Content
Summary
Yahoo Japan
business content enterprise japan
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.jpwhich points to operational systems within theyahoo.co.jpdomain. - 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.18 |
| JPIX Osaka | Osaka, Japan | 103.246.232.162 |
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 · 119K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS24572- Registry name
- YAHOO-JP-AS-AP
- Registrant
- Yahoo Japan
- Abuse contact
- ml-nwunit-bbnw@lycorp.co.jp
- Registered
- 2008-09-04
- Last changed
- 2021-05-18
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Yahoo Japan 2
- Network type
- Content
- Scope
- Regional
- Traffic ratio
- Heavy Outbound
- Peering policy
- Selective
- IRR as-set
AS-YAHOO-JP-2- Present at
- 3 exchanges
- Facilities
- 1 facilities
- Website
- http://www.yahoo.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 · 5 valid, 0 with no ROA
- ROAs
- 6 authorising AS24572
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 11 naming AS24572
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