AltoBeam (China) Inc. — 8 prefixes (MA-L)

AltoBeam (China) Inc. is a Beijing-based fabless Wi-Fi semiconductor company founded in 2007 and enrolled in the Returned Students Pioneering Park at Tsinghua Science Park (registry address: B808, Tsinghua Tongfang Hi-Tech Plaza, Haidian, Beijing 100083, CN). It holds 8 confirmed MA-L (24-bit OUI) blocks under that exact registrant name: 38-BE-AB, 44-29-1E, 84-7A-B6, 88-28-7D, 9C-1C-37, A4-EF-15, B4-FB-E3, F4-B1-9C. AltoBeam designs Wi-Fi SoCs (ATBM602x/603x/643x and the Wi-Fi 6 ATBM6062/6162 families) plus TV tuners and DTV demodulators; it does not manufacture end-user devices. The critical caveat for OUI work is that AltoBeam is a chip vendor, not a device OEM — MAC addresses from these blocks belong to the OEM device makers who embed AltoBeam chipsets, not to AltoBeam-branded hardware. AltoBeam silicon is reported to be the world's #1 supplier by shipment volume in wireless IP security cameras (claimed 2025), and is also found in smart TVs, OTT set-top boxes, Wi-Fi printers, robot vacuums, smart projectors, tablets, automotive displays, and other IoT appliances. The practical consequence for network defenders: an AltoBeam OUI hit in a network scan most likely indicates an IP camera or IoT device rather than a PC or phone. Note a distinct registrant-name variant, "AltoBeam Inc." (without "China"), exists at the same address and holds separate MA-L assignments; those are not included in this 8-block consolidation. No AltoBeam-specific CVEs were found, and AltoBeam is not on the FCC Covered List or the BIS Entity List as of June 2026.

IEEE assignment

8 prefixes → AltoBeam (China) Inc., registered Beijing, CN [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); 8 IEEE prefixes [Confirmed] — IEEE the IEEE MA-L registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools (e.g. "25 July 2020" on macverify.com/alldatafeeds.com) is a database ingest artifact, not an IEEE fact.

HQ / country

B808, Tsinghua Tongfang Hi-Tech Plaza, Haidian, Beijing 100083, CN (registry address; Tsinghua Science Park) [Confirmed] — IEEE MA-L, https://hwaddress.com/company/altobeam-china-inc/

Company status

active — fabless semiconductor design company, founded 2007 [Confirmed] — https://app.dealroom.co/companies/altobeam, https://www.wpgholdings.com/productline/detail/en/ALTOBEAM

Company type

B2B chip supplier (does NOT manufacture end-user devices) — MAC addresses from these OUIs belong to OEM device makers integrating AltoBeam SoCs [Confirmed] — https://www.altobeam.com/en/contents/79/112.html

Device types (where chips appear)

wireless IP security cameras (claimed world #1 by shipment volume, 2025), smart TVs, OTT set-top boxes, Wi-Fi printers, robot vacuums, smart projectors, tablets, automotive multimedia displays, UAVs, IoT/office-automation equipment

[Confirmed] — https://www.accio.com/supplier/altobeam-inc, https://www.wpgholdings.com/productline/detail/en/ALTOBEAM

Primary product lines

Wi-Fi SoCs — ATBM602x (802.11b/g/n), ATBM603x (b/g/n, SDIO+USB), ATBM643x (IoT, embedded MCU + b/g/n), ATBM6062/6162 (Wi-Fi 6 / 802.11ax, 2.4GHz/dual-band, some with BLE 5.0); also silicon TV tuners (ATBM20xx) and DTV demodulators (ATBM88xx/78xx)

[Confirmed] — https://www.altobeam.com/en/contents/79/113.html, https://github.com/gtxaspec/atbm-wifi

Verified sample prefixes (all MA-L, AltoBeam (China) Inc.)

9C:1C:37, A4:EF:15, B4:FB:E3, F4:B1:9C [Confirmed] — IEEE MA-L

Full prefix set (8 MA-L)

38-BE-AB, 44-29-1E, 84-7A-B6, 88-28-7D, 9C-1C-37, A4-EF-15, B4-FB-E3, F4-B1-9C [Confirmed] — IEEE the IEEE MA-L registry, https://hwaddress.com/company/altobeam-china-inc/

Registration date

Unknown — IEEE publishes no per-OUI registration date; third-party dates are ingest artifacts [Unknown] — (no first-party source)

Security context

No CVEs specific to AltoBeam chipsets found in public databases. NOT on the FCC Covered List (which covers Huawei, ZTE, Hikvision, Dahua, Kaspersky-related entities) and not known to appear on the BIS Entity List, as of June 2026. General China-origin supply-chain considerations apply (China's 2017 National Intelligence Law), but no AltoBeam-specific enforcement actions, sanctions, or disclosed backdoor findings exist [Confirmed for absence as of 2026-06; Likely for completeness of search] — https://www.opensanctions.org/datasets/us_fcc_covered_list/

Notable partnerships

Renesas (RA Cortex-M MCU + AltoBeam Wi-Fi module partner solution); WPG Holdings / AIT Group (authorized Asia distributor); early US investors include DFJ DragonFund, USVP, WestSummit Capital, Tano Capital, and David Cheriton (2009–2012 rounds) [Likely] — https://www.renesas.com/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ra-partners/altobeam-wi-fi-cloud-solution, https://app.dealroom.co/companies/altobeam

Related entity

"AltoBeam Inc." (without "China") — separate IEEE registrant name at the same address with additional MA-L assignments; NOT consolidated here [Confirmed] — https://macverify.com/vendor/altobeam-inc

Analyst note

An AltoBeam OUI on a globally-administered MAC most likely identifies an IP camera or IoT device (chip embedded by an OEM), not AltoBeam-branded hardware. Treat third-party prefix-count aggregates (~50 across both name variants) and "date registered" fields as database artifacts, not authoritative IEEE facts.