Gree Electric Appliances, Inc. of Zhuhai — 6 prefixes (MA-L)
Summary
- // what this is
- Gree Electric Appliances, Inc. of Zhuhai is registered to MAC prefix
04:47:CAand 5 more in the IEEE OUI database. When a device's MAC address begins with04:47:CA, that block was registered by Gree Electric Appliances, Inc. of Zhuhai — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Six-OUI footprint at one address plus a large, identifiable public company confirms this is a substantive vendor entry, not a single-OUI shell. Device context (smart AC via Gree+ app) is Likely (single-angle, app-store sourced); referenced CVEs are unverified (source page returned 403) and flagged Likely, not Confirmed.
About this vendor.
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.
- Vendor app ecosystem
- Gree's "Gree+" IoT control app (Android/iOS)
- Also seen on
- other Gree consumer appliances sharing the same networking modules (unconfirmed beyond air conditioners)
- Organization address
- Jinji West Road, Qianshan, Zhuhai, Guangdong CN 519070 (two transcription variants across IEEE rows, same location)
- Registry class
- MA-L only — no MA-M or MA-S assignments found for this org
- 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