GSD Viet Nam Technology Company Limited — 12 prefixes (MA-L)

GSD Viet Nam Technology Company Limited is the Vietnam manufacturing arm of Huizhou Gaoshengda Technology Co., Ltd., a Chinese OEM that builds wireless connectivity modules — Wi-Fi (including dual-band 802.11ac/ax), Bluetooth, and combo Wi-Fi+BT — embedded inside smart TVs, set-top boxes, routers, surveillance gear, and smart-home/IoT appliances. The "GSD" in the Vietnam entity's name maps to "Gaoshengda" (its pinyin abbreviation), and trade records show its dominant supplier/buyer is the Chinese parent, consistent with a components-assembly relationship. The local plant, in Dong An 2 Industrial Park in the Binh Duong / Ho Chi Minh City area, manufactures PCBs, remote-control assemblies, and related wireless subcomponents, importing parts from China. All 12 MA-L blocks in the local IEEE registry share one registered Vietnam address. The practical consequence for asset classification: these prefixes appear on the embedded radio of a finished consumer device, so a GSD/Gaoshengda OUI usually identifies an OEM Wi-Fi/BT module inside someone else's branded product — not a GSD-branded end device — which is why router dashboards often surface "unknown device: Gaoshengda." No CVEs, malware campaigns, or threat-actor attributions were found naming this vendor or its prefixes; the parent is a legitimate large-scale module supplier. A common data trap to avoid: the "First registration: 01 October 2025" shown on third-party MAC-lookup sites is a database artifact (when the entry first appeared in a scrape of the IEEE public OUI CSV), not an IEEE-published assignment date — IEEE publishes none.

IEEE assignment

12 prefixes → GSD VIET NAM TECHNOLOGY COMPANY LIMITED, registered Ho Chi Minh City / Binh Duong, VN [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); 12 IEEE prefixes; no MA-M or MA-S (the IEEE MA-S registry) entries exist for this vendor [Confirmed] — local IEEE registry (the IEEE MA-L registry / the IEEE MA-M registry / the IEEE MA-S registry). NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" (e.g. "01 October 2025" on maclookup.app) is a third-party database artifact, not an IEEE fact.

HQ / country

Part of Factory 2, Lot C2.10, D1 Street, Dong An 2 Industrial Park, Binh Duong Ward, Ho Chi Minh City, Ho Chi Minh 820000, Vietnam (VN) [Confirmed] — IEEE MA-L; maclookup.app

Company status

active (Vietnam manufacturing subsidiary) [Likely] — trade records (en.nbd.ltd, trademo.com); no government registry filing directly inspected

Device types

OEM wireless modules — Wi-Fi (dual-band 802.11ac/ax), Bluetooth, combo Wi-Fi+BT, smart control/voice modules; embedded in smart TVs, set-top boxes, routers, surveillance equipment, smart-home/IoT devices [Confirmed] — baike.baidu.com (Gaoshengda), siemag.us.com, en.nbd.ltd

Notable products

embedded Wi-Fi/BT modules and remote-control assemblies for consumer/IoT electronics

Corporate relationship

Vietnam manufacturing subsidiary of Huizhou Gaoshengda Technology Co., Ltd. (China); "GSD" = "Gaoshengda" pinyin abbreviation; Gaoshengda runs five production bases (Huizhou, Tianjin, Suzhou, Xianyang, Vietnam) [Confirmed] — baike.baidu.com, trademo.com, en.nbd.ltd

Verified sample prefixes (all MA-L)

44:0F:B4, 70:7E:DA, 0C:0F:D8, 68:C8:C0, E8:B8:53, 7C:01:3E, 8C:2A:C1, 08:9B:27, 38:9B:73, 90:7A:BE, CC:61:46, 24:64:04 [Confirmed] — IEEE MA-L

Prefix-count note

local IEEE registry shows 12 prefixes; maclookup.app lists 13 (adds C8:BB:B4), a normal third-party-snapshot drift. Range stated rather than a hard count. [Likely] — the IEEE MA-L registry (12) vs maclookup.app (13)

Website

no dedicated GSD-Vietnam site found; parent operates a Made-in-China storefront. Note: GSD Technologies (Taiwan-listed, stock code 6641) is a DISTINCT entity, not this subsidiary. [Likely] — made-in-china.com (Gaoshengda storefront)

Security context

no CVEs, malware, or threat-actor attributions found for this vendor or its OUIs; parent is a legitimate OEM. Vietnam broadly shows elevated IoT-botnet exposure regionally, but no incident is tied to this vendor. [Confirmed — absence of attribution] — robotpoweredhome.com, nexusguard.com

Analyst note

A GSD/Gaoshengda OUI typically identifies an embedded OEM Wi-Fi/BT module inside another brand's product, not a GSD-branded end device — expect "unknown device: Gaoshengda" on router dashboards; don't treat the OUI as the device manufacturer's brand.