AS22228 — TOKYO-ELECTRON-US-HOLDINGS-INC

AS22228 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

The AS handle TOKYO-ELECTRON-US-HOLDINGS-INC is held by Tokyo Electron U.S. Holdings, Inc.

What it's used for

• The space carries corporate infrastructure for a semiconductor equipment manufacturer, evidenced by the netname TEUH-IPV4-1 and the registrant identity.
• The inventory consists of 512 IPv4 addresses within a single /23 prefix (204.115.150.0/23) and 0 IPv6 prefixes, with 2 observed neighbours, indicating a small internal corporate estate rather than a transit or access network.

Notable

• The RDAP registrant Tokyo Electron U.S. Holdings, Inc. matches the AS holder exactly, confirming direct ownership of the address space.
• The address inventory is a single contiguous block, typical of a corporate network segmenting its internal operations.

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

Announced prefixes

• 204.115.150.0/23

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS36086 Telx

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS36086 Telx

Routing security

• RPKI: 0 valid, 0 invalid and 2 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 2 route objects.
• Listed in as-sets: AS-COMCAST-EDIA, AS-LOGIXFIBER, AS-TELX, AS-TELX.