The Furukawa Electric Co., Ltd. — 3 prefixes (MA-L)

The Furukawa Electric Co., Ltd. is a long-established Japanese electrical and telecommunications manufacturer, headquartered in the Marunouchi/Otemachi district of Chiyoda-ku, Tokyo, that holds three MA-L OUI blocks under its own name: 40:64:A4, 00:80:BD, and FC:A8:E0. All three registry entries list Japan and Chiyoda-ku, Tokyo addresses, consolidating what would otherwise be three near-identical per-prefix pages into one substantive vendor entry. Furukawa's networking-relevant catalog is broad and well documented: GPON/FTTH access equipment (OLTs, ONUs and ONTs under the "Laserway" brand, e.g. the FK-OLT-G8S concentrator and LD1102W-class ONUs), structured and enterprise LAN cabling under the Furukawa Cabling Systems (FCS) line, industrial LAN cable via the Okano Cable subsidiary, and fiber-optic connectivity and fusion-splicing gear. Its optical-fiber cable business was rebranded "Lightera" effective April 1, 2025. A common data-quality trap to avoid: the prefix B8:26:D4 is registered to "Furukawa Industrial S.A. Produtos Elétricos," a separate Brazilian legal entity, and should not be merged into this vendor's prefix count; likewise, several unrelated registrants (e.g. ALPS ALPINE, CORES Corporation) carry the place-name "Furukawa" only in their street addresses and are not this company.

IEEE assignment

3 prefixes → THE FURUKAWA ELECTRIC CO., LTD, Chiyoda-ku, Tokyo, JP [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); no MA-M or MA-S registrations found for this exact org name [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry

Verified prefixes (all MA-L, THE FURUKAWA ELECTRIC CO., LTD)

40:64:A4 (2-2-3 Marunouchi, Chiyoda-ku, Tokyo 100-8322), 00:80:BD (6-1 Marunouchi 2-chome, 100 JP), FC:A8:E0 (2-6-4 Otemachi, Chiyoda-ku, Tokyo 100-8322) [Confirmed] — the IEEE MA-L registry, Wireshark the Wireshark manufacturer database (short name "FurukawaElec")

HQ / country

Chiyoda-ku, Tokyo, Japan (Marunouchi / Otemachi registry addresses) [Confirmed] — the IEEE MA-L registry

Company status

active [Confirmed] — https://www.furukawaelectric.com/en/

Device types

GPON/FTTH access equipment (OLTs, ONUs/ONTs — "Laserway" brand), structured/enterprise LAN cabling (Furukawa Cabling Systems / FCS), industrial LAN cable (Okano Cable), fiber-optic connectivity and fusion splicers [Likely] — https://www.furukawaelectric.com/telecom/en/ , https://furukawa.my.salesforce-sites.com/en-us/products-catalog-details/gpon-standalone-optical-concentrator-fk-olt-g8s (device-type context is at the company/product-line level; no source ties a specific one of the three prefixes to a named model)

Notable products

FK-OLT-G8S / FK-OLT-G4S GPON OLTs, LD1100/LD1102W/LD1600 ONUs, Laserway GPON line, FCS cabling systems; optical-fiber cable business rebranded "Lightera" as of 2025-04-01 [Likely] — https://www.furukawaelectric.com/en/release/2018/comm_180830.html , https://furukawa.my.salesforce-sites.com

Industry

telecommunications / cable / optical networking equipment [Confirmed] — https://www.furukawaelectric.com/en/

No IEEE date

IEEE public OUI data (the IEEE MA-L registry: Registry, Assignment, Organization Name, Organization Address) contains NO assignment/registration date. A third-party tool (maclookup.app) shows "Date Registered: 11 October 2017" for 40:64:A4 — this is a third-party database artifact, not an IEEE-published fact, and is not recorded as an authoritative registration date.

[Confirmed] — https://maclookup.app/macaddress/4064A4 , https://standards-oui.ieee.org/oui/oui.csv

Security context

no Furukawa Electric-specific CVEs or advisories found in this pass. Furukawa OUIs commonly appear on carrier/ISP-deployed GPON access gear (OLT/ONU/ONT) rather than end-user devices; the applicable posture is the general FTTH-access-class one (WAN-facing management, ISP-controlled provisioning), stated as Unknown for anything Furukawa-specific — not "no vulnerabilities exist." [Unknown]

Related vendors

Furukawa Industrial S.A. Produtos Elétricos (distinct Brazilian entity, prefix B8:26:D4 — NOT merged); Okano Cable (subsidiary) [Confirmed] — the IEEE MA-L registry

Analyst note

A globally-administered Furukawa OUI identifies genuine Furukawa hardware, most often GPON/FTTH access equipment or LAN cabling infrastructure; per-prefix product attribution should stay at the product-line level, as no source maps a specific prefix to a named model.