Shenzhen Trolink Technology Co., Ltd — 8 prefixes (MA-L)

Shenzhen Trolink Technology Co., Ltd holds eight IEEE MA-L blocks, all 24-bit OUI assignments with no MA-M or MA-S registrations. The registrant name is spelled inconsistently across the assignments ("Shenzhen Trolink Technology Co., Ltd", "shenzhen trolink Technology Co.,Ltd", "Shenzhen Trolink Technology CO, LTD"), but all clearly refer to the same Bao'an District, Shenzhen entity; three slightly different registry addresses appear across the blocks, all in the Hangcheng Street / Sanwei area, consistent with a company that relocated or amended its filing over time. On consumer products the firm brands itself "TrolinkTek." It is a B2B ODM/OEM that supplies wireless connectivity hardware: Realtek-chipset Wi-Fi USB dongles (RTL8188/8192EU/8723DU/8811), embedded Wi-Fi modules for IoT, wireless CarPlay adapters and CarPlay AI boxes, Bluetooth adapters, routers, and Wi-Fi range extenders. Devices seeing network traffic from one of these OUIs are most plausibly a Wi-Fi USB dongle in a PC, an automotive CarPlay adapter, or an embedded module inside a third-party smart-home product. No CVEs, botnet activity, or threat-intel entries were found specifically for Trolink or TrolinkTek as of June 2026. Class-level caution applies to any unmanaged Realtek-based consumer Wi-Fi or generic Chinese-ODM CarPlay device — firmware in the end product is often outside the OUI holder's control — but no Trolink-specific risk signal exists. As with every MAC prefix, the OUI alone identifies the silicon vendor, not the end product, and IEEE publishes no registration date for these assignments.

IEEE assignment

8 prefixes → Shenzhen Trolink Technology Co., Ltd, registered Bao'an District, Shenzhen, Guangdong, CN [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); 8 IEEE prefixes, all MA-L (no MA-M / MA-S found) [Confirmed] — IEEE the IEEE MA-L registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "registered on 15 September 2018" shown by third-party tools (maclookup.app) is a database artifact, not an IEEE fact.

Verified prefixes (all MA-L)

4C:A3:8F, 48:8F:4C, 94:A4:08, DC:84:03, 68:B9:D3, 30:4A:26, CC:C4:B2, F0:A8:82 [Confirmed] — IEEE the IEEE MA-L registry / maclookup.app

HQ / country

Bao'an District, Hangcheng Street / Sanwei area, Shenzhen, Guangdong, CN. Three registry addresses across the blocks (Fenda High Technology Park 518101; Chashu Industry 505 block 518000; Donghua Intelligent Manufacturing Park 518101) [Confirmed] — IEEE the IEEE MA-L registry

Company status

active [Confirmed] — trolinkiot.com

Brand name

"TrolinkTek" on consumer products; IEEE registrant is "Shenzhen Trolink Technology Co., Ltd" [Confirmed] — trolinkiot.com / IEEE the IEEE MA-L registry

Founding year

~2005 (company marketing claims "20 years' experience" as of 2025/2026) [Likely] — trolinkiot.com (single self-reported source)

Device types

Wi-Fi USB dongles (Realtek RTL8188/8192EU/8723DU/8811), embedded Wi-Fi modules (RTL8189/8723/8731/8733), wireless CarPlay adapters & CarPlay AI boxes, car monitors, Bluetooth adapters, routers, Wi-Fi repeaters/range extenders, IoT gateways [Confirmed] — trolinkiot.com, globalsources.com

Industry

wireless connectivity / IoT hardware ODM-OEM [Confirmed] — trolinkiot.com, alibaba.com storefronts

Website

https://www.trolinkiot.com/ (primary); Alibaba storefronts sztrolink.en.alibaba.com, zgtrolink.en.alibaba.com [Confirmed] — trolinkiot.com

Security context

No Trolink-specific CVEs, botnet activity, or IOC entries found as of June 2026 [Confirmed] — no public threat-intel/CVE hits. Class-level risk only: Realtek-chipset consumer Wi-Fi dongles/routers and generic Chinese-ODM CarPlay adapters carry the usual unmanaged-IoT firmware concerns; ISO-9001/encryption claims are vendor marketing, not an independent audit

[Likely] — news.ycombinator.com discussion (class-level, not Trolink-specific)

Analyst note

An OUI in this set identifies Trolink/Realtek-based silicon, not the finished product — most often a Wi-Fi dongle, a CarPlay adapter, or an embedded module re-badged by a downstream OEM. Treat firmware trust as a property of the end device, not the OUI.