Baidu holds seven MA-L (24-bit OUI) blocks in the IEEE registry. Six are registered to "Baidu Online Network Technology (Beijing) Co., Ltd" at the Baidu Campus on Shangdi 10th Street in Haidian District, Beijing — B8:5C:EE, 48:F3:F3, 10:A4:B9, CC:E0:DA, 88:2D:53, and D4:60:75. A seventh block, 74:EE:8D, is held by Apollo Intelligent Connectivity (Beijing) Technology Co., Ltd., Baidu's autonomous-driving affiliate, at a separate Baidu Technology Park address. The hardware behind these blocks is overwhelmingly Baidu's "Xiaodu" (小度) consumer-IoT line: DuerOS-powered smart speakers, smart screens, and learning tablets, with the DuerOS voice platform extending across third-party TVs, appliances, and in-vehicle systems. No per-prefix device mapping is published, so the blocks are best treated as shared across the Xiaodu family. As with all OUI work, IEEE publishes no registration dates — any "date registered" on third-party lookup tools (maclookup.app, uic.io) is a database artifact, not an IEEE fact, so allocated_date stays null. Two material risk signals attach to Baidu hardware for asset-classification purposes: Citizen Lab's 2015–2016 findings of weak/broken transit encryption across Baidu software (Baidu Browser leaked GPS, IMEI, search terms and MAC over trivially-broken AES; update channels lacked code signing), and the June 2026 U.S. DoD Section 1260H "Chinese military company" designation, which raises supply-chain and procurement risk for networks deploying Baidu-branded devices.
- IEEE assignment
- 7 MA-L prefixes — 6 to "Baidu Online Network Technology (Beijing) Co., Ltd", 1 (74:EE:8D) to Apollo Intelligent Connectivity (Beijing) Technology Co., Ltd. [Confirmed] — enrichment/registries/oui.csv (lines 252, 365, 917, 2072, 16990, 17734, 25169)
- Registry / block size
- MA-L (24-bit OUI); all 7 blocks are MA-L. No MA-M (mam.csv) or MA-S (oui36.csv) matches. [Confirmed] — enrichment/registries/oui.csv, mam.csv, oui36.csv. NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools (maclookup.app, uic.io) is a database artifact, not an IEEE fact.
- HQ / country
- Baidu Campus, No.10 Shangdi 10th Street, Haidian District, Beijing 100085, CN [Confirmed] — enrichment/registries/oui.csv; corroborated by https://uic.io/en/mac/vendor/baidu_online_network_technology_beijing_co_ltd/
- Company status
- active [Confirmed] — https://www.baidu.com
- Device types
- consumer IoT / smart-home hardware — Xiaodu smart speakers, smart screens/displays, learning tablets (DuerOS voice platform) [Confirmed] — https://dueros.baidu.com/en/html/dueros/index.html, https://baike.baidu.com/en/item/XIAODU/1484717
- Notable products
- Xiaodu (小度) smart-speaker and smart-display family; DuerOS voice-assistant platform [Confirmed] — https://dueros.baidu.com/en/html/dueros/index.html
- Verified prefixes (all MA-L)
- B8:5C:EE, 48:F3:F3, 10:A4:B9, CC:E0:DA, 88:2D:53, D4:60:75 → Baidu Online Network Technology (Beijing) Co., Ltd; 74:EE:8D → Apollo Intelligent Connectivity (Beijing) Technology Co., Ltd [Confirmed] — enrichment/registries/oui.csv
- Related entities
- Apollo Intelligent Connectivity (Beijing) Technology Co., Ltd. — Baidu autonomous-driving affiliate, holder of 74:EE:8D [Confirmed] — enrichment/registries/oui.csv (line 252)
- Market presence
- Xiaodu held ~30.4% of China's smart-speaker market (2022), #1 in shipments for three consecutive quarters per IDC; DuerOS claims integration across 200M+ devices [Likely — vendor/press figures, single industry-source quarter snapshot] — https://www.scmp.com/tech/tech-trends/article/3219778/baidus-smart-speaker-unit-launch-phone-next-week, https://dueros.baidu.com/en/html/dueros/index.html
- Security note
- No hardware-specific CVE or DuerOS firmware advisory located. Citizen Lab (2015–2016) documented Baidu Browser transmitting GPS/IMEI/search terms/MAC with broken AES and unsigned update channels (pattern of weak transit protection across Baidu software, predates current firmware). [Confirmed] — https://citizenlab.ca/research/privacy-security-issues-baidu-browser/, https://www.cvedetails.com/vendor/6986/Baidu.html
- Procurement / supply-chain note
- U.S. DoD added Baidu to the Section 1260H "Chinese military companies" list (June 2026); direct-contracting prohibition effective 2026-06-30, secondary vendor ban June 2027; Baidu disputes the designation. Not a technical vulnerability, but a deployment-risk signal. [Confirmed] — https://www.cnbc.com/2026/06/09/alibaba-baidu-byd-named-on-pentagons-china-military-list-.html
- Analyst note
- A Baidu/Apollo OUI on a globally-administered address identifies genuine Baidu-family hardware (largely Xiaodu IoT); absence does not mean "not Baidu" if MAC randomization is in play. OUI is reliable for inventory classification but not for access control.