Huizhou BYD Electronic Co., Ltd. — 3 prefixes (MA-L)

Huizhou BYD Electronic Co., Ltd. is a genuine IEEE MA-L registrant holding three 24-bit OUI blocks — AC:87:46, 80:5F:8E, and 84:F7:58 — all carrying the identical organization name and the identical registered address in the cached IEEE registry: Xiangshui River, Economic Development Zone, Daya Bay, Huizhou, Guangdong, China (CN 516000). It is a Huizhou-based subsidiary of the broader BYD group and is a legally distinct entity from the Shenzhen "BYD Precision Manufacture Company Ltd." / "BYD COMPANY LIMITED" registrations already documented under the DONE entry vendor-byd-electronic. The registry itself holds several separately-registered BYD-branded entities — BYD Precision Manufacture (BC:23:92, 90:20:3A, 98:BB:1E, 18:3B:D2), BYD Company Limited (00:1E:DE), BYD Lithium Battery (E4:6E:8A), and BYD Auto Industry (MA-M) — which share the brand but must not be merged with this Huizhou registrant. Trade-data sources describe a components / contract-manufacturing scope skewed toward small consumer electronics: chargers and adapters, household and robot-vacuum chargers, sweeping-robot components, e-cigarettes/vapes, tablets, batteries, and sensors. One important data trap: maclookup.app labels AC:87:46 with an "Initial registration" date of 15 April 2026 — this is a third-party database scrape/refresh artifact, not an IEEE fact, since IEEE's public the IEEE MA-L registry carries no assignment-date field at all, and it must never be recorded as a registration date. A second trap ruled out during research: OUI 0C:91:60 does NOT belong to this vendor (it is Hui Zhou Gaoshengda Technology / TCL-affiliated, already the DONE entry vendor-gaoshengda) despite a misleading macaddress.io statistics page.

IEEE assignment

3 prefixes → Huizhou BYD Electronic Co., Ltd. (MA-L, 24-bit) [Confirmed] — cached IEEE registry (the IEEE MA-L registry); AC:87:46 cross-corroborated at https://maclookup.app/macaddress/ac8746

Verified prefixes (all MA-L, same registrant/address)

AC:87:46, 80:5F:8E, 84:F7:58 [Confirmed] — the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI); 3 blocks assigned [Confirmed] — the IEEE MA-L registry. NOTE: IEEE's public OUI data (the IEEE MA-L registry columns: Registry, Assignment, Organization Name, Organization Address) publishes NO assignment/registration date; any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

Xiangshui River, Economic Development Zone, Daya Bay, Huizhou, Guangdong, China CN 516000 (registry address; postal sometimes given as 516083 in trade data) [Confirmed] — the IEEE MA-L registry, corroborated https://panjiva.com/Huizhou-Byd-Electronic-Co-Ltd/1128453

Company status

active; subsidiary of the BYD group, reported founded 2007, HQ Huizhou, Guangdong [Likely] — https://discovery.patsnap.com/company/huizhou-byd-electronic/, https://www.zoominfo.com/c/huizhou-byd-electronics-co-ltd/1104785434 (self-reported / trade-data sourced)

Device types

chargers and adapters, household/robot-vacuum chargers, sweeping-robot (robot vacuum) components, e-cigarettes/vapes, tablets, batteries, sensors — components / contract-manufacturing scope

[Likely] — https://matchory.com/supplier/huizhou-byd-electronic, https://panjiva.com/Huizhou-Byd-Electronic-Co-Ltd/27948668

Industry

electronics contract manufacturing (EMS/ODM-adjacent) [Likely] — trade-data sources above

Related but distinct vendors

BYD Precision Manufacture Company Ltd. (BC:23:92, 90:20:3A, 98:BB:1E, 18:3B:D2 — the vendor-byd-electronic DONE entry), BYD Company Limited (00:1E:DE), BYD Lithium Battery Co., Ltd. (E4:6E:8A), BYD Auto Industry Co., Ltd. (MA-M) — same brand, separate registrants; do NOT merge

[Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry

No MA-M / MA-S match

this organization name appears only in the MA-L registry; the IEEE MA-M registry and the IEEE MA-S registry contain no matching entry (unrelated "BYD Auto/BYDA" and "Bydgoszcz"-address rows are different organizations) [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

Date warning

maclookup.app shows "15 April 2026 — Initial registration" for AC:87:46; this is a third-party database artifact (scrape/refresh timestamp), NOT an IEEE registration date and NOT recorded here [Confirmed] — https://maclookup.app/macaddress/ac8746, https://standards-oui.ieee.org/oui/oui.csv

Data trap ruled out

OUI 0C:91:60 is NOT Huizhou BYD Electronic — it belongs to Hui Zhou Gaoshengda Technology Co., Ltd (TCL-affiliated; DONE entry vendor-gaoshengda), despite a misleading macaddress.io statistics page [Confirmed] — https://maclookup.app/macaddress/0c9160

Security context

no CVE, advisory, or abuse-database record is attributed to "Huizhou BYD Electronic" or to any of the three prefixes in any source cited by this entry, and the IEEE registry carries no security data at all — an open question, not a clean bill of health; as with sibling BYD manufacturers, an OUI identifies the contract manufacturer, not the retail brand on white-labeled finished devices

[Unknown] — no advisory source found; the IEEE MA-L registry (registry carries no security field)

Analyst note

identifiable company with substance (3 MA-L blocks, real BYD-subsidiary corporate identity, corroborated Daya Bay facility, concrete trade-data product context) — comparable to the sibling vendor-byd-electronic DONE entry; not a thin single-OUI shell.