TD Tech registers the MA-L OUI 64:44:D5 to "TD Tech" at 15F, Building D, Yeqing Building, No. 9 Wangjing North Road, Chaoyang District, Beijing (postal 100102), CN. The company is a Beijing-and-Chengdu industrial-wireless vendor with a notable corporate lineage: it began in 2005 as a Huawei–Siemens joint venture built for TD-SCDMA (China's homegrown 3G standard), Siemens later sold its stake to Nokia (which became the 51% majority holder), and in January 2024 Nokia exited the venture explicitly citing US–China geopolitical tensions. By May 2024 ownership consolidated under Chengdu Dingqiao Holding Co., Ltd., leaving the entity Huawei-adjacent via a holding structure that also includes a government-owned investor (Chengdu High-Tech Investment Group). TD Tech ships MAC-bearing hardware across several lines: industrial 4G/5G private-network radios and base stations, rugged Push-to-Talk-over-Cellular handsets (the V900), 5G Industry CPE, the M40 5G smartphone, body-worn cameras, and IoT modules — so the OUI plausibly appears on Wi-Fi, Ethernet (CPE LAN), and Bluetooth interfaces. A related but distinct registrant name, "ChengDu TD Tech," holds two further MA-L blocks (9C:54:40 and D0:A0:D6) at a Chengdu address; these reflect the same corporate entity's second operating location rather than a separate company. IEEE publishes no registration date for MA-L assignments, so no date is recorded here.
- IEEE assignment
- 64:44:D5 → TD Tech, registered Beijing, CN [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv)
- Registry / block size
- MA-L (24-bit OUI) [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv)
- HQ / country
- 15F, Building D, Yeqing Building, No. 9 Wangjing North Road, Chaoyang District, Beijing 100102, CN [Confirmed] — IEEE MA-L; corporate HQ Beijing with R&D in Chengdu and Shanghai [Confirmed] — https://www.td-tech.com/en/company
- Company status
- active [Confirmed] — https://www.td-tech.com/en/company
- Corporate lineage
- founded 2005 as a Huawei–Siemens TD-SCDMA JV; Siemens stake later sold to Nokia (51% majority); Nokia exited Jan 2024 citing US–China tensions; ownership consolidated under Chengdu Dingqiao Holding Co., Ltd. by May 2024, leaving the entity Huawei-adjacent with a government co-investor (Chengdu High-Tech Investment Group) [Confirmed] — https://techblog.comsoc.org/2024/01/21/nokia-to-exit-td-tech-joint-venture-with-huawei-due-to-u-s-china-tensions/ , https://techwireasia.com/2024/01/huawei-takes-over-td-tech-as-nokia-sells-its-stake/
- Device types
- industrial 4G/5G private-network radios and base stations; rugged PoC handsets (V900); 5G Industry CPE; M40 5G smartphone (TDT-MA01); 5G body-worn cameras (BWC 520S); 5G dome camera (EQ510); IoT modules [Confirmed] — https://www.td-tech.com/en/company , https://www.gsmchoice.com/en/catalogue/tdtech/v900/ , https://www.gsmchoice.com/en/catalogue/tdtech/m40/
- Primary industries
- smart mass transit, airports, ports, smart power grids, safe cities, private-network enterprise wireless, industrial IoT [Confirmed] — https://news.cgtn.com/news/30417a4e79514464776c6d636a4e6e62684a4856/index.html
- No IEEE date
- IEEE publishes NO assignment/registration date for OUI blocks (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address). Any "date registered" on third-party MAC-lookup tools is a database artifact, not an IEEE fact. No RIR/RDAP analogue exists for OUI prefixes. [Confirmed] — IEEE MA-L
- Related prefixes
- "ChengDu TD Tech" holds MA-L blocks 9C:54:40 and D0:A0:D6 (C3 floor, Software Park, No. 219 Tianhua Second Road, Chengdu High-Tech Zone, CN 610041) — same corporate entity's second location, would map to a
vendor-chengdu-td-tech slug if produced [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv) - Security context
- elevated-attention vendor by Huawei association — Nokia exited citing US–China tensions, post-exit ownership runs through a Huawei-adjacent holding structure with a government co-investor; Huawei supply-chain concerns apply structurally by association. No TD Tech-specific CVEs, confirmed backdoors, or sanctions found in this pass; the M40's "secure dual-system design" is a vendor marketing claim, not an independent certification. The risk framing is an assessment, not a confirmed incident. [Likely] — https://www.securityweek.com/huawei-and-supply-chain-security-great-geopolitical-debate/ , https://www.recordedfuture.com/blog/huawei-technology-risks
- Analyst note
- a 64:44:D5 OUI on a globally-administered address identifies genuine TD Tech hardware; given the company's public-safety/critical-infrastructure deployment footprint and Huawei-adjacent ownership lineage, asset-classification of these devices in sensitive networks warrants awareness of the ownership structure.