FUJI ELECTRIC CO., LTD. — 2 prefixes (MA-L)

A MAC address starting with F8:E0:00 or 00:40:1A belongs to Fuji Electric Co., Ltd., a Japanese industrial-electronics manufacturer, and is typically seen on networked industrial-control equipment — PLCs, inverter/drive controllers, or SCADA/HMI monitoring stations — rather than consumer devices.

Fuji Electric holds two distinct MA-L (24-bit OUI) registrations in the IEEE registry: F8:E0:00, registered to the address "1-27, Fuji-cho Yokkaichi, JP 510-0013," and 00:40:1A, registered to "NEW YURAKUCHO BLDG, JP" with no city given. No MA-M (28-bit) or MA-S (36-bit) sub-allocations were found under this registrant name.

The company is a well-documented, substantial industrial manufacturer, not a bare single-OUI shell. Founded August 29, 1923 in Kawasaki as a joint venture between Furukawa Electric and Siemens (the name blends "Fu" + "Si" with Mount Fuji), it is now headquartered at Gate City Ohsaki, Shinagawa-ku, Tokyo, and remains an active, publicly traded company (TSE: 6504).

Its Industry segment makes the equipment classes most likely to carry these prefixes: FRENIC-series inverters and motor drives, MICREX-line PLCs, factory-automation components, and monitoring/engineering software such as V-Server and D300win. No public source ties either OUI block directly to a named device model — this is product-line corroboration, not a per-device MAC confirmation.

Fuji Electric's industrial-control software has a multi-year CISA ICS-CERT advisory history spanning 2018 through 2025, covering V-Server, V-Server Lite, Alpha5 Smart Loader, FRENIC Loader, D300win, and Smart Editor, with buffer-overflow and out-of-bounds read/write CVEs and CVSS scores as high as 8.7. No CVE found as of an August 2026 search ties either OUI to a networking-stack or NIC-level flaw specifically, and no malware or trojan association is recorded for the company.

IEEE assignment

F8:E0:00 → FUJI ELECTRIC CO., LTD., registered "1-27, Fuji-cho Yokkaichi JP 510-0013" [Confirmed] — the IEEE MA-L registry F8E000

IEEE assignment

00:40:1A → FUJI ELECTRIC CO., LTD., registered "NEW YURAKUCHO BLDG JP" (no city given) [Confirmed] — the IEEE MA-L registry 00401A

Registry / block size

MA-L (24-bit OUI) only; no MA-M (28-bit) or MA-S (36-bit) entries found for this registrant [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry

HQ / country

Gate City Ohsaki, East Tower, Ōsaki, Shinagawa-ku, Tokyo 141-0032, Japan (current corporate HQ; distinct from the registry addresses on file for each OUI) [Confirmed] — en.wikipedia.org/wiki/Fuji_Electric

Company status

active, publicly traded (TSE: 6504); founded August 29, 1923 in Kawasaki as a Furukawa Electric / Siemens joint venture [Confirmed] — en.wikipedia.org/wiki/Fuji_Electric, fujielectric-europe.com/about-us/history

Device types

FRENIC-series inverters/motor drives, MICREX PLCs, factory-automation components, V-Server/D300win/Smart Editor monitoring and engineering software [Confirmed for product line; Unknown for direct link of either OUI to a specific device model] — fujielectric.com/products/drives_inverters/index.html

Registration date

Unknown / not applicable — IEEE publishes no registration or assignment dates for MAC/OUI prefixes; the IEEE MA-L registry has no date column, and any third-party "date registered" value is a database artifact, not an IEEE fact [Confirmed null] — the IEEE MA-L registry

Security context

CISA ICS advisories 2018-2025 name V-Server (ICSA-18-254-01), V-Server Lite / CVE-2018-10637 CVSS v3 7.8 (ICSA-18-254-02), Alpha5 Smart Loader (ICSA-18-270-02), FRENIC Loader / CVSS v3 4.4 (ICSA-19-213-02), D300win / CVSS v3 8.7 (ICSA-22-242-05) [Confirmed]; Smart Editor / CVSS v4 8.4 (ICSA-25-168-04) [Likely — corroborated only via search-index snippet, direct CISA page fetch returned HTTP 403] — cisa.gov/news-events/ics-advisories/icsa-18-254-01, /icsa-18-254-02, /icsa-18-270-02, /icsa-19-213-02, /icsa-22-242-05, /icsa-25-168-04

Malware/trojan association

none recorded as of an August 2026 search [Confirmed null] — cisa.gov advisories reviewed; no corroborating hit found

Shared base check

not applicable — F8:E0:00 and 00:40:1A are ordinary company-registered MA-L blocks assigned directly to FUJI ELECTRIC CO., LTD., not IEEE-Registration-Authority-held shared bases requiring sub-allocation caveats [Confirmed] — the IEEE MA-L registry F8E000, 00401A

Related vendors

SHIMAFUJI ELECTRIC CO.,LTD. (00:0A:A3) — distinct, unrelated registrant despite the similar name; do not conflate [Confirmed] — the IEEE MA-L registry

Website

https://www.fujielectric.com/ [Confirmed] — fujielectric.com