AS37893 — TRADEWEB-TKO Tradeweb Japan

AS37893 announces 3 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

The AS handle TRADEWEB-TKO is held by Tradeweb Japan.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by the netname TRADEWEB-CIDR-BLK-JP assigned to all announced prefixes.
• The inventory consists of 1024 IPv4 addresses across 3 prefixes, with 3 observed routing neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.
• Traffic from this AS consists of office workers and web/API endpoints for Tradeweb's financial trading operations in Japan.

Notable

• Registrants for all prefixes are listed as Japan Network Information Center (JPNIC), which is consistent with the standard allocation process for Japanese organizations.
• Tradeweb is a global electronic trading platform for fixed income, rates, and FX, with this AS representing its Japanese operations.
• The address inventory is finely subdivided into three distinct blocks, reflecting site-by-site segmentation typical of a corporate estate.

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

Announced prefixes

• 103.78.156.0/23
• 202.6.119.0/24
• 202.129.254.0/24

Upstream networks

• AS13335 Cloudflare, Inc.
• AS2516 KDDI CORPORATION
• AS4713 NTT DOCOMO BUSINESS,Inc.

Adjacent networks

• AS13335 Cloudflare, Inc.
• AS2516 KDDI CORPORATION
• AS4713 NTT DOCOMO BUSINESS,Inc.

Routing security

• RPKI: 0 valid, 0 invalid and 5 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 6 route objects.
• Listed in as-sets: AS-BTC-UP, AS-GIGAINFRA, AS-IIJ, AS-IIJ6, AS-ITXBR1, AS-KDD, AS-KDDCUSTOMER2, AS-KVH, AS-OCN, AS-OCN, AS-PNAPTOK, AS-TELSTRA-INTL-CUSTOMERS, AS-UDOS, AS-VECTANT, AS1299:AS-TWELVE99-AP-V4, AS1299:AS-TWELVE99-AP-V6, AS13335:AS-CUSTOMERS, AS17754:AS-CUSTOMERS, AS2497:AS-IIJ, AS2497:AS-IIJ6.