AS55898 — YAHOO-CORP - LY Corporation

AS55898 announces 5 IPv4 prefixes covering 2,560 addresses and 1 IPv6 prefixes.

About this network

YAHOO-CORP is operated by LY Corporation.

What it's used for

• The address space carries corporate infrastructure, evidenced by netnames YAHOO-CORP and YAHOO-NET and reverse DNS entries like opc211014026128.yahoo.co.jp and ygn203141054064.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.

Announced prefixes

• 103.2.244.0/22
• 203.141.54.0/24
• 211.14.8.0/24
• 211.14.26.0/23
• 211.14.28.0/23
• 2405:8500::/32

Upstream networks

• AS23816 LY Corporation
• AS9607 BroadBand Tower, Inc.
• AS7679 QTnet,Inc.

Adjacent networks

• AS23816 LY Corporation
• AS9607 BroadBand Tower, Inc.
• AS7679 QTnet,Inc.

Routing security

• RPKI: 6 valid, 0 invalid and 0 not-found announcements; 6 ROAs.
• ASPA: none published.
• IRR: 50% of announcements registered; 3 route objects.
• Listed in as-sets: AS-BBIX-T, AS-BBIX-T-V6, AS-GCTR-JP, AS-GIGAINFRA, AS-GIGAINFRA-V6, AS-GLOBEINTERNET-CLIENTS, AS-GLOBEINTERNET-CLIENTS, AS-HURRICANEV6, AS-IIJ, AS-IIJ6, AS-IPV6_VECTANT, AS-KDD, AS-KDDCUSTOMER2, AS-KDDI6, AS-MCNET, AS-MESH-CUSTOMER:AS7679, AS-OCN, AS-OCN, AS-OCN-V6, AS-OCN-V6, AS-TELSTRA-INTL-CUSTOMERS, AS-VECTANT, AS-YAHOO-JP, AS-YAHOO-JP-2, AS-YAHOO-JP-2-V6.