KAGA FEI Co., Ltd. — FC:33:57 (MA-L)

KAGA FEI Co., Ltd. holds a single MA-L (24-bit OUI) assignment, prefix FC:33:57, registered to "KAGA FEI Co., Ltd." at 100-45, Shinyokohama 2-Chome Kohoku-Ku Yokohama-Shi Kanagawa JP 222-8508. The block appears only in IEEE's the IEEE MA-L registry (MA-L registry); it is not present in the MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) files, so this is a full 24-bit OUI carrying roughly 16 million addresses.

KAGA FEI Co., Ltd. is a Japanese electronics components distributor and developer headquartered in Shin-Yokohama. The company was formed when Kaga Electronics Co., Ltd. acquired a 70% stake in Fujitsu Electronics Inc. (FEI) from Fujitsu Semiconductor Limited in 2018–2019, with full acquisition completed and the entity renamed KAGA FEI Co., Ltd. by late 2020. The "FEI" in the name is a direct carry-over from the Fujitsu Electronics Inc. lineage. The company operates approximately 950 employees globally across subsidiaries in Japan, China, South Korea, the Asia-Pacific region, Europe, and North America (Silicon Valley).

KAGA FEI's primary business is distributing and developing electronic components — semiconductors, microcontrollers, memory (DRAM, FeRAM, ReRAM), power devices, audio processors, GPS modules, and AI solutions — to manufacturers in the automotive, audio-visual, communications, and industrial information-processing sectors. The division most relevant to this OUI is their CONTINECT wireless module line: compact, pre-certified IoT modules spanning Bluetooth Low Energy (BLE) and Wireless LAN (Wi-Fi). Recent CONTINECT additions include the EC4L15BA1/EC4L10BA1/EC4L05BA1 BLE modules (Bluetooth 6, PSA Level 1–3 certified, Matter + Thread support, FCC/MIC/ISED pre-certified), targeting healthcare IoT, industrial IoT, wearables, smart building equipment, logistics terminals, surveillance cameras, and home appliances. KAGA FEI also offers embedded microcontroller software, custom SoC design, and application boards.

The FC:33:57 OUI was registered no later than August 2022 per third-party tools (maclookup.app records 2022-08-12). That date is a database artifact: IEEE's public the IEEE MA-L registry contains no assignment/registration date column, so no IEEE-sourced date is available or should be stated as such. The OUI covers KAGA FEI's own-branded hardware — most likely CONTINECT wireless modules or application boards shipped to OEM/ODM customers. Network appearances of FC:33:57 addresses are expected to be IoT devices (BLE modules embedded in consumer or industrial products), networking/communication hardware prototypes, or development boards, rather than end-user laptops or phones.

No CVEs or public security incidents for KAGA FEI products were found in available sources. The BLE modules explicitly target PSA Level 3 security certification, indicating security is actively considered in product design. There are no country-of-origin or supply-chain flags: the company is Japanese-owned (Kaga Electronics, listed on Tokyo Stock Exchange) with Fujitsu heritage, not a PRC entity.

IEEE assignment

FC:33:57 → KAGA FEI Co., Ltd., registered Yokohama, Kanagawa, JP [Confirmed] — IEEE the IEEE MA-L registry (MA-L), line 440; corroborated by maclookup.app

Registry / block size

MA-L (24-bit OUI; ~16M addresses); single assignment. Not present in the IEEE MA-M registry (MA-M) or the IEEE MA-S registry (MA-S). [Confirmed] — IEEE the IEEE MA-L registry; maclookup.app. NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" on third-party tools is a database artifact, not an IEEE fact.

Registered address / country

100-45, Shinyokohama 2-Chome Kohoku-Ku Yokohama-Shi Kanagawa JP 222-8508, Japan [Confirmed] — IEEE the IEEE MA-L registry (MA-L)

Company status

active; subsidiary of Kaga Electronics Co., Ltd. (Tokyo Stock Exchange listed); ~950 employees globally [Confirmed] — kagafei.com; kagafeiamerica.com

Corporate lineage

Fujitsu Electronics Inc. (FEI) acquired by Kaga Electronics 2018–2019; renamed KAGA FEI Co., Ltd. ~2020; "FEI" suffix retained as brand heritage [Confirmed] — iconnect007.com; kagafeiamerica.com; microwavejournal.com

Allocated date

Unknown — IEEE publishes no OUI registration date. Third-party maclookup.app records 2022-08-12, but that is a database artifact and is recorded as approximate-only, not an IEEE fact. [Unknown / artifact] — maclookup.app

Device types

IoT wireless modules (BLE, Wi-Fi), application boards, embedded development hardware; primary downstream uses: consumer IoT (wearables, smart home, healthcare), industrial IoT (logistics terminals, surveillance cameras, smart building equipment)

[Confirmed] — kagafeiamerica.com; iottechnews.com; iotglobalnetwork.com

Key product line

CONTINECT wireless modules — BLE (EC4L15BA1, EC4L10BA1, EC4L05BA1; Bluetooth 6, PSA Level 1–3, Matter/Thread, FCC/MIC/ISED pre-certified) and Wireless LAN (long-range) modules [Confirmed] — iottechnews.com; businesswire.com; kagafeiamerica.com

Security context

no known CVEs or public incidents; BLE modules certified to PSA Level 3 (highest IoT security tier); company is Japanese-owned (Kaga Electronics), no PRC ownership flag; FC:33:57 addresses on a network likely indicate CONTINECT OEM modules embedded in IoT products or development boards [Confirmed (certifications); Likely (identification)] — iottechnews.com; themachinemaker.com

Website

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

Analyst note

FC:33:57 on a network almost certainly indicates a KAGA FEI CONTINECT wireless module (BLE or Wi-Fi) embedded in an IoT or industrial device. Japanese corporate lineage (Fujitsu Electronics heritage → Kaga Electronics parent). PSA Level 3 security certification on flagship BLE modules. No CVEs known. Low threat profile; treat as a legitimate IoT/embedded networking component.