Beijing Winner Microelectronics Co.,Ltd. — 2 prefixes (MA-L)

Beijing Winner Microelectronics Co.,Ltd. holds two confirmed MA-L OUI blocks — 28:6D:CD and C8:58:6A — both registered to the same organization name and Haidian District, Beijing address in IEEE's public the IEEE MA-L registry, and cross-confirmed in the parallel the Wireshark manufacturer database mapping file. Unlike a bare single-block registrant, Winner Micro is an identifiable IC design house with a named embedded Wi-Fi product line: the W500 low-power multi-mode Wi-Fi SoC, the W600 802.11b/g/n Cortex-M3 Wi-Fi SoC (QFN32 package), and the W601 Wi-Fi MCU with LCD-driver support. These chips ship in third-party smart-plug, lighting, appliance, health-monitoring, toy, wireless-A/V, and industrial-control hardware — corroborated independently by a Seeed Studio W600 module hardware-design guide and a PR Newswire release announcing the W600 SDK, neither of which originates from Winner Micro itself. No MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) registrations exist for this org; only unrelated companies share the substring "Winner" in those files. No adverse security findings surfaced in general web search, but that was not checked against a dedicated CVE database, so it stays Unknown rather than asserted clean.

IEEE assignment

two prefixes → Beijing Winner Microelectronics Co.,Ltd., Floor 18, YinDu Building, No.67 FuCheng Road, HaiDian District, Beijing, 100142, CN [Confirmed] — the IEEE MA-L registry, :33480; the Wireshark manufacturer database, :50332

Registry / block size

MA-L (24-bit OUI) × 2 blocks (28:6D:CD, C8:58:6A) [Confirmed] — the IEEE MA-L registry, :33480

No MA-M / MA-S registrations

the IEEE MA-M registry and the IEEE MA-S registry contain no matching org for this vendor; only unrelated companies ("Bulat Co., Limited" at a "WINNER BUILDING" address, "Legend Winner Limited", "WINNERS DIGITAL CORPORATION") share the substring "Winner"

[Confirmed] — the IEEE MA-M registry, :4641; the IEEE MA-S registry

HQ / country

Floor 18, YinDu Building, No.67 FuCheng Road, HaiDian District, Beijing 100142, CN [Confirmed] — the IEEE MA-L registry, :33480; https://www.winnermicro.com/en/

Company status

active — operating company website with current product line [Likely] — https://www.winnermicro.com/en/

Device types

embedded Wi-Fi SoCs/MCUs for IoT — smart plugs, lighting, appliances, health-monitoring devices, toys, wireless A/V, industrial control [Confirmed] — https://www.winnermicro.com/en/; https://files.seeedstudio.com/wiki/W600_Module/res/W600%20HardwareDesignGuide_v1.0.1.pdf

Notable products

W500 (low-power multi-mode Wi-Fi SoC), W600 (802.11b/g/n Cortex-M3 Wi-Fi SoC, QFN32), W601 (Wi-Fi MCU with LCD-driver support) [Confirmed] — https://www.winnermicro.com/en/; https://www.winnermicro.com/en/upload/1/editor/1565008131994.pdf

Verified sample prefixes

28:6D:CD, C8:58:6A (both MA-L, same org/address) [Confirmed] — the IEEE MA-L registry, :33480

Registration date

Unknown / not applicable — IEEE's the IEEE MA-L registry publishes no assignment/registration-date field (columns are Registry, Assignment, Organization Name, Organization Address only); no date attributed to IEEE for either block [Confirmed absence] — the IEEE MA-L registry

Third-party device corroboration

independent (non-vendor) sources confirm the W600 ships in real third-party hardware — a Seeed Studio module hardware-design guide and a PR Newswire SDK-release article [Confirmed] — https://files.seeedstudio.com/wiki/W600_Module/res/W600%20HardwareDesignGuide_v1.0.1.pdf; https://www.prnewswire.com/news-releases/winner-micro-releases-their-new-sdk-for-iot-wi-fi-soc-w600-which-will-shake-the-iot-market-300780168.html

Security context

no adverse CVE/abuse findings surfaced in general web search, but not checked against a dedicated CVE database [Unknown]

Related vendors

none identified [Unknown]

Analyst note

two independent MA-L blocks plus a named, third-party-corroborated Wi-Fi SoC product line establish this as a substantive registrant, not a bare single-OUI shell — appropriate to finalize as a consolidated vendor entry.