Autonomous system
AS55898 YAHOO-CORP LY Corporation
Unclassified ARIN
Summary
LY Corporation
business enterprise japan tech
YAHOO-CORP is operated by LY Corporation.
What it's used for
- The address space carries corporate infrastructure, evidenced by netnames
YAHOO-CORPandYAHOO-NETand reverse DNS entries likeopc211014026128.yahoo.co.jpandygn203141054064.yahoo.co.jp. - The AS announces 2560 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, with only 3 observed neighbours, indicating a small, self-contained internal corporate estate rather than a transit or access network.
- Traffic from this AS consists of internal office workers, web/API endpoints, and backend services for LY Corporation's digital platforms, including Yahoo Japan and LINE.
Notable
- Registrants for all announced prefixes are listed as Japan Network Information Center with IRT-JPNIC-JP, consistent with the announcer LY Corporation.
- LY Corporation was formed in October 2023 through the reorganization of Group companies including LINE Corporation and Yahoo Japan Corporation.
- The inventory is finely subdivided into small /22, /23, and /24 blocks, typical of internal corporate site segmentation.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 2.56K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS55898- Registry name
- YAHOO-CORP
- Registered
- 2010-11-29
- Last changed
- 2025-06-18
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 6 valid, 0 with no ROA
- ROAs
- 6 authorising AS55898
- ASPA
- no ASPA record
- IRR
- 50% registered · 3 of 6 announcements
- Route objects
- 3 naming AS55898
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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