Gree Electric Appliances, Inc. of Zhuhai — 6 prefixes (MA-L)

A MAC address beginning with one of six IEEE-registered prefixes — 04:47:CA, 50:2C:C6, 58:0D:0D, 7C:B8:E6, 94:24:B8, or C0:39:37 — belongs to Gree Electric Appliances, Inc. of Zhuhai, and is typically seen on Wi-Fi/BLE-enabled smart-home appliances, chiefly air conditioners, connected through Gree's own "Gree+" IoT app.

This is not a bare single-OUI shell. All six MA-L blocks trace to the same organization at the same facility (Jinji West Road, Qianshan, Zhuhai, Guangdong CN 519070; two textually distinct IEEE address transcriptions point to the identical location). Gree is a large, publicly traded Chinese multinational (SZSE:000651), widely reported as the world's largest air-conditioner manufacturer, with roughly $27.9B revenue and ~70,000 employees as of 2022.

Device context is consistent with consumer smart-appliance networking rather than generic infrastructure gear: the prefixes appear on Wi-Fi/BLE modules embedded in Gree air conditioners and other appliances that pair with the "Gree+" mobile app for remote control. This corroboration comes from a single research angle (app-store listings), so it is tagged Likely rather than Confirmed.

Gree publishes a formal vulnerability-disclosure program with stated response SLAs. Search results also reference two older Android-app info-disclosure issues, but the cvedetails.com page listing them returned HTTP 403 on direct fetch, so the exact CVE identifiers remain unverified — treated as Likely, not Confirmed. No MA-M or MA-S blocks exist for this organization, and IEEE publishes no assignment date for any MA-L row, so registration date stays Unknown by design rather than fabricated.

IEEE assignment

6 prefixes → GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI [Confirmed] — the IEEE MA-L registry (lines 1441, 22940, 30900, 30912, 33220, 33222)

Registry / block size

MA-L (24-bit OUI) × 6; no MA-M or MA-S blocks found for this org [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry (local checks, no matches)

HQ / registered address

West Jinji Rd / Jinji West Road, Qianshan, Zhuhai, Guangdong CN 519070 — two textual variants across rows, same facility [Confirmed] — the IEEE MA-L registry

Company status

active; publicly traded SZSE:000651; reported world's largest air-conditioner manufacturer, ~$27.9B revenue / ~70,000 employees (2022) [Confirmed] — https://en.wikipedia.org/wiki/Gree_Electric

Device types

Wi-Fi/BLE-enabled smart-home appliances (primarily air conditioners) via the "Gree+" app [Likely, single angle] — https://play.google.com/store/apps/details?id=com.gree.greeplus, https://apps.apple.com/us/app/gree/id1167857672

Verified prefixes (all MA-L)

04:47:CA, 50:2C:C6, 58:0D:0D, 7C:B8:E6, 94:24:B8, C0:39:37 [Confirmed] — the IEEE MA-L registry, the Wireshark manufacturer database (alias "GreeElectric")

Registration date

Unknown — IEEE publishes no assignment/registration date for MA-L OUI rows; not attributed to IEEE [Confirmed absence] — the IEEE MA-L registry

IANA reference

N/A — not applicable to OUI/MAC registrations (IANA Reference is a port-registry concept); left blank, not fabricated [Confirmed]

Security context

formal vulnerability-disclosure program with published SLAs (critical 7 business days; high/medium 30; firmware/hardware 180) [Confirmed] — https://global.gree.com/usa/channels/844.html, https://global.gree.com/channels/845.html. Two historical Android-app info-disclosure issues are referenced in search results but the cvedetails.com listing page returned HTTP 403 on direct fetch, so exact CVE IDs are unverified

[Likely] — https://www.cvedetails.com/vulnerability-list/vendor_id-12143/product_id-22876/Gree-Gree.html

Related vendors

none identified; all 6 OUIs resolve to the same single organization

Existing master status

not yet present in this site's own enrichment records — pre-production lookup, only queued in this site's own enrichment records [Confirmed] — this site's own enrichment records