Meross holds 3 IEEE blocks of mixed registry type — one MA-M block (34:29:8F:1) and two MA-L blocks (48:E1:E9, C4:E7:AE) — registered as "Chengdu Meross Technology Co., Ltd." at No. 25, Yizhou Avenue, Gaoxin, Chengdu, Sichuan, China. These OUIs appear on smart plugs, smart switches and dimmers, smart lighting, garage-door openers, sensors, and smart locks, and the devices are HomeKit-compatible. The MA-M (28-bit) block is notable because it is a smaller medium allocation, unusual among consumer brands that typically hold full MA-L blocks. The key analyst point is that, like other budget smart-home brands, many Meross Wi-Fi devices surface under their Wi-Fi chipset vendor's OUI (for example Espressif). For triage, a 48:E1:E9 or C4:E7:AE OUI indicates a Meross device, and the MA-M block (34:29:8F:1) is a narrow range; because many Meross devices may still appear under a chipset OUI, OUI absence doesn't exclude Meross.
- IEEE assignment
- 3 prefixes → "Chengdu Meross Technology Co., Ltd." — 34:29:8F:1 (MA-M), 48:E1:E9 (MA-L), C4:E7:AE (MA-L), Chengdu, China [Confirmed] — IEEE MA-M + MA-L
- Registry / block size
- mixed — 1 MA-M (28-bit) + 2 MA-L (24-bit); 3 blocks total [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- No. 25, Yizhou Avenue, Gaoxin, Chengdu, Sichuan 610000, China [Confirmed] — maclookup.app
- Company status
- active [Likely] — meross.com
- Device types
- smart plugs, smart switches/dimmers, smart lighting, garage-door openers, sensors, smart locks; HomeKit-compatible [Confirmed] — meross.com
- Notable products
- smart plugs, smart switches, garage-door openers (HomeKit-compatible)
- Verified prefix
- 34:29:8F:1 (MA-M), 48:E1:E9 (MA-L), C4:E7:AE (MA-L) [Confirmed] — maclookup.app
- Special note
- One MA-M (28-bit) block — notable as a smaller medium allocation, unusual among consumer brands that typically hold full MA-L blocks. Like other budget smart-home brands, many Meross Wi-Fi devices surface under their Wi-Fi chipset vendor's OUI (e.g., Espressif). The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Espressif (likely chipset supplier)
- Analyst note
- A 48:E1:E9 / C4:E7:AE OUI indicates a Meross device; the MA-M block (34:29:8F:1) is a narrow range. Many Meross devices may still appear under a chipset OUI, so OUI absence doesn't exclude Meross.