Dongguan Liesheng Electronic Co., Ltd. — 14 prefixes (MA-L)

Dongguan Liesheng Electronic Co., Ltd. holds 14 IEEE MA-L (24-bit OUI) blocks, all registered to the corporate entity in Dongguan, Guangdong Province, China. The important thing to know about these prefixes is what kind of hardware they sit on: Liesheng is a consumer Bluetooth audio and wearables manufacturer, best known by its retail brand Haylou — true-wireless earbuds, noise-cancelling headphones, smartwatches, and smart bracelets — not a networking-infrastructure vendor. The company was established around May 2015 and is a long-standing Xiaomi-ecosystem partner (Xiaomi/Shunwei Capital backing dates to 2014). Across two cross-checking angles (the local IEEE registry CSV and open web/FCC records) the same 14 prefixes resolve to the same organization, and 67 FCC filings under grantee code 2AMQ6 (2017–2025) are uniformly audio/wearable device types — no networking gear appears. The practical consequence for asset classification: one of these OUIs showing up on a corporate network almost always means a personal wearable (earbuds or a smartwatch) reached the network over a Bluetooth/BLE bridge, not a network-attached endpoint — an Liesheng OUI on wired infrastructure would be anomalous and worth a second look. As with every IEEE OUI, no assignment/registration date exists: IEEE publishes none, and third-party "first seen" timestamps (e.g. maclookup.app 2019-11-20) are database scrape artifacts, not IEEE facts.

IEEE assignment

14 prefixes → Dongguan Liesheng Electronic Co., Ltd., registered Dongguan, Guangdong, CN [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv)

Registry / block size

MA-L (24-bit OUI); 14 IEEE prefixes [Confirmed] — IEEE oui.csv; not present in mam.csv or oui36.csv. NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" on third-party tools (e.g. maclookup.app first-seen 2019-11-20) is a database artifact, not an IEEE fact.

HQ / country

F5, Building B, North Block, Gaosheng Tech Park, No. 84 Zhongli Road, Nancheng District, Dongguan, Guangdong 523000, CN (current registry address) [Confirmed] — IEEE MA-L. One earlier block (E8:EC:A3) lists 13th Floor South Building, Gosun Science Park, Hongtu Rd, Dongguan 523073 — likely an older address for the same entity (relocation). [Likely]

Company status

active [Confirmed] — https://haylou.com/ (active brand site), https://fcc.report/company/Dongguan-Liesheng-Electronics-Co-L-T-D (filings through 2025)

Founded

~May 2015; Xiaomi/Shunwei Capital backing from 2014 [Confirmed] — https://baike.baidu.com/en/item/Dongguan%20Liesheng%20Electronic%20Technology%20Co.,%20Ltd/64212

Device types

consumer Bluetooth audio + wearables — true-wireless earbuds, noise-cancelling headphones/stereo headsets, smartwatches, smart bracelets; also PCBA/PCB ODM/OEM. NOT networking infrastructure. [Confirmed] — https://www.globalsources.com/dongguan-liesheng/company-profile_6008849056307.htm, https://fcc.report/company/Dongguan-Liesheng-Electronics-Co-L-T-D

Brand / also known as

Haylou (consumer brand); FCC name "Dongguan Liesheng Electronics Co., L.T.D."; Xiaomi-ecosystem partner [Confirmed] — https://fcc.report/company/Dongguan-Liesheng-Electronics-Co-L-T-D, https://baike.baidu.com/en/item/Dongguan%20Liesheng%20Electronic%20Technology%20Co.,%20Ltd/64212

Verified sample prefixes (all MA-L)

7C:C9:5E, 24:B2:31, 9C:CD:42, E0:08:71, E8:EC:A3 [Confirmed] — IEEE oui.csv. Full set: 14:6C:27, 18:B9:6E, 1C:91:9D, 20:1B:88, 24:B2:31, 7C:C9:5E, 90:EF:4A, 9C:19:C2, 9C:49:52, 9C:CD:42, B0:BD:1B, E0:08:71, E0:67:81, E8:EC:A3

FCC

67 filings under grantee code 2AMQ6 (2017–2025), all Bluetooth audio/wearable (LS, HF, OW, T, GT, HAYLOU series); no networking device types [Confirmed] — https://fcc.report/company/Dongguan-Liesheng-Electronics-Co-L-T-D

Website

consumer brand https://haylou.com/ (active); no dedicated corporate liesheng.com found in open sources [Likely] — https://haylou.com/, https://www.globalsources.com/dongguan-liesheng/company-profile_6008849056307.htm

Security note

no Liesheng/Haylou-specific CVE or advisory found. General Airoha-chip Bluetooth RACE vulnerabilities (CVE-2025-20700/20701/20702) affect many earbud/headphone makers, but Haylou's chip vendor is unconfirmed in open sources, so applicability is Unknown. [Likely] — https://insinuator.net/2025/06/airoha-bluetooth-security-vulnerabilities/, https://www.darkreading.com/vulnerabilities-threats/airoha-chip-vulns-sony-bose-earbuds-headphones

Analyst note

a Liesheng OUI is almost always a personal wearable (earbuds/smartwatch) reaching the network over a Bluetooth/BLE bridge, not a network-attached endpoint; an appearance on wired enterprise infrastructure is anomalous and worth investigating.