Huizhou Desay SV Automotive Co., Ltd. — 2 prefixes (MA-L)

Huizhou Desay SV Automotive Co., Ltd. holds two IEEE MA-L blocks — 74:9C:52 and CC:D9:20 — both registered to the company at its Zhongkai Hi-tech Zone address in Huizhou, Guangdong, China (516006). This is a substantive, identifiable manufacturer rather than a bare single-OUI registrant: Desay SV is a publicly listed automotive electronics supplier (Shenzhen Stock Exchange, stock code 002920, listed 2017) that traces its origins to 1986. It designs and builds in-vehicle infotainment head units, cockpit and display domain controllers, instrument clusters, driver-assistance sensor modules (cameras and radar), telematics/connectivity hardware, and wireless chargers, supplying OEM automakers on a Tier-1 basis. Devices bearing these prefixes are therefore automotive electronics inside vehicles, not consumer routers or retail IoT gear — a useful classification signal when one of these MACs shows up on a network capture near a connected car or a workshop diagnostic session. The company's identity is corroborated independently by FCC equipment-authorization filings under the exact legal name, spanning wireless and telematics device families, which confirms it actually ships radio-bearing hardware. A caution for OUI work: several other organizations in the IEEE registry share the "Desay" name or the Desay building address (for example "DESAY ELECTRONICS (HUIZHOU) CO.,LTD" and "DESAY A&V SCIENCE AND TECHNOLOGY CO.,LTD") but are distinct legal entities and must not be folded into this vendor.

IEEE assignment

2 prefixes → Huizhou Desay SV Automotive Co., Ltd., Huizhou, Guangdong, CN 516006 [Confirmed] — IEEE MA-L

Verified prefixes (both MA-L)

74:9C:52, CC:D9:20 [Confirmed] — IEEE MA-L; note W1-web independently corroborated 74:9C:52 via uic.io and could only single-source CC:D9:20 on that same aggregator, but both are first-party confirmed in the cached IEEE registry, so both stand as Confirmed on the registry read.

Registry / block size

MA-L (24-bit OUI); holds 2 IEEE prefixes [Confirmed] — IEEE MA-L. No MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) assignment exists for this vendor — zero grep matches in the cached registries [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

HQ / country

No.103, Hechang 5th Road West, Zhongkai National Hi-tech Industrial Development Zone, Huizhou, Guangdong, CN 516006 (registry address) [Confirmed] — IEEE MA-L

Company status

active; publicly listed on the Shenzhen Stock Exchange, stock code 002920 (listed 2017) [Confirmed] — en.desaysv.com/about.html, stockanalysis.com/quote/she/002920

Founded

1986 (originally a car-audio electronics business) [Likely] — en.desaysv.com/about.html (company self-reported; single primary source)

Device types

in-vehicle infotainment (IVI) head units, cockpit/display domain controllers, instrument clusters, ADAS sensor modules (camera/radar), telematics/connectivity modules, wireless chargers [Likely] — en.desaysv.com/about.html, marklines.com/en/top500/huizhou-desay-sv-automotive; device-type corroboration from FCC equipment-authorization filings (fcc.report/company/Huizhou-Desay-Sv-Automotive-Co-L-T-D)

Industry / model

automotive electronics Tier-1 supplier; B2B/OEM supply (not direct-to-consumer retail) [Likely] — en.desaysv.com/about.html, marklines.com

Registration date

Unknown — IEEE publishes no OUI/MA-L assignment date; the cached the IEEE MA-L registry has no date column. Any "date registered" on third-party MAC-lookup sites is a database-scrape artifact, not an IEEE fact. Not recorded. [Confirmed] — standards.ieee.org/products-programs/regauth

Security / abuse context

Unknown — a targeted search for CVEs, named vulnerabilities, or abuse reports tied to "Desay SV" or these OUIs returned no findings; recorded as a sourced null, not fabricated [Unknown] — no source found

Related-but-distinct entities (do NOT conflate)

"DESAY ELECTRONICS (HUIZHOU) CO.,LTD", "DESAY A&V SCIENCE AND TECHNOLOGY CO.,LTD", and other organizations sharing the Desay building address ("Far-sighted mobile", "Shenzhen ireadygo Information Technology CO.,LTD.", "Wellav Technologies Ltd") are separate registrants [Confirmed] — IEEE MA-L

Analyst note

One of these OUIs on a globally-administered address is a strong signal for automotive-electronics hardware from a Tier-1 supplier. Because Desay ships B2B to OEMs, these MACs typically appear inside vehicles or on connected-car/diagnostic sessions rather than on consumer networking equipment.