Shenzhen Bluetrum Technology Co., Ltd. (中科蓝讯) is an active Chinese fabless Bluetooth-audio SoC maker, but no IEEE OUI registrant entry was located for it. Its corporate HQ is at Smart Plaza, Qiaoxiang Road, Nanshan District, Shenzhen (with a Zhuhai branch/R&D center), and it was established on 2016-12-19 and listed on the Shanghai STAR Market (ticker 688332) on 2022-07-15 — but those are corporate facts, not an IEEE registration. Its silicon (chips often marked "AB") appears in TWS earbuds, Bluetooth speakers, neckband headsets, and BT receivers, and its downstream brand customers reportedly include Xiaomi, realme, Honor, 1MORE, Edifier, Philips, Anker, Audio-Technica, Transsion, Nokia, Baidu, and Tencent QQ Music. The reason for the negative finding is structural and mirrors peers like JieLi: Bluetrum's BT-audio SoCs do not appear to surface a dedicated IEEE OUI, because the Bluetooth device addresses on these cheap earbuds are typically drawn from the OEM's own allocation or are randomized. For triage, do not expect a "Bluetrum" OUI in switch or ARP tables — budget TWS or BT-speaker devices on Bluetrum silicon appear under an OEM or randomized address, not a Bluetrum prefix.
- IEEE assignment
- no IEEE OUI / MAC prefix located for Bluetrum [Likely negative] — maclookup.app/udger.com (absence)
- Registry / block size
- none located [Likely negative]
- HQ / country
- Smart Plaza, Qiaoxiang Road, Nanshan District, Shenzhen, China (Zhuhai branch/R&D); corporate, not an IEEE registrant [Confirmed] — company filings
- Company status
- active; established 2016-12-19; listed on Shanghai STAR Market (688332) 2022-07-15 [Confirmed] — Yahoo Finance, company filings
- Device types
- Bluetooth-audio SoCs — TWS earbuds, BT speakers, neckband headsets, BT receivers [Confirmed] — bluetrum.com
- Notable products
- TWS/BT headset and speaker chips (often marked "AB"); downstream brand customers reportedly include Xiaomi, realme, Honor, 1MORE, Edifier, Philips, Anker, Audio-Technica, Transsion, Nokia, Baidu, Tencent QQ Music [Likely] — Bluetrum "About Us"
- Verified prefix
- none (near-negative finding) [Likely]
- Special note
- Near-negative finding (like JieLi). Bluetrum's BT-audio SoCs don't appear to surface a dedicated IEEE OUI; Bluetooth addresses on cheap earbuds are typically from the OEM's allocation or randomized. The IEEE registry publishes no assignment dates, and no Bluetrum block was located. [Likely]
- Related vendors
- BES/Bestechnic, JieLi (peer BT-audio SoC makers)
- Analyst note
- Don't expect a Bluetrum OUI in switch/ARP tables; budget TWS/BT-speaker devices on Bluetrum silicon appear under an OEM or randomized address, not a Bluetrum prefix.