Inventus Power Eletronica do Brasil LTDA holds five IEEE MA-L (24-bit OUI) blocks — A4:63:A1, 98:7E:CA, 90:0A:62, 54:09:29, and 10:98:5F — all registered to the same Manaus address in Brazil's Amazonas free-trade zone (Av Buriti, 4285, Distrito Industrial, BR 69075000). The registrant is the Brazilian subsidiary of US-based Inventus Power (headquartered in Woodridge, Illinois); the Manaus plant was established in 1995 and brought under Inventus Power ownership in late 2015. This is a contract battery and power-electronics manufacturer, not a networking-gear vendor: its primary registered activity is the manufacture of batteries and electrical accumulators (CNAE 2721-0/00), with secondary activities including communication-transmission equipment (CNAE 2631-1/00) and electronic components (CNAE 2610-8/00). Those secondary registrations explain why a battery OEM holds MAC blocks at all — it embeds BLE/Wi-Fi modules in smart battery packs, chargers, and BMS designs with OTA telemetry. The practical security read: an Inventus Power OUI on a network most likely marks an embedded wireless module (a smart charger, a BLE-enabled battery management system, or an IoT-adjacent wearable component) rather than a router, AP, or switch. The end-device class is not self-evident from the OUI alone, so an unexpected appearance on an enterprise or OT segment warrants device-type verification rather than an elevated threat assumption. No CVE or threat-intelligence associations were found for these prefixes.
- IEEE assignment
- 5 prefixes → Inventus Power Eletronica do Brasil LTDA, Manaus, Amazonas, BR [Confirmed] — IEEE MA-L (oui.csv)
- Registry / block size
- MA-L (24-bit OUI), all 5 blocks; ~83.9M addresses total [Confirmed] — IEEE oui.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 (e.g. maclookup.app dates 2019–2024 for these prefixes) is a database artifact, not an IEEE fact.
- HQ / country
- Av Buriti, 4285, Distrito Industrial, Manaus, Amazonas, BR 69075000 (registry address; US parent in Woodridge, IL) [Confirmed] — IEEE MA-L, maclookup.app
- Company status
- active [Confirmed] — inventuspower.com, cnpj.biz (CNPJ 00.399.541/0001-34)
- Parent / history
- subsidiary of Inventus Power (Woodridge, IL, US); Manaus plant est. 1995, acquired by Inventus Power late 2015 [Confirmed] — inventuspower.com (Manaus facility spotlight), econodata.com.br
- Primary business
- manufacture of batteries and electrical accumulators, excl. automotive (CNAE 2721-0/00); secondary CNAEs include communication-transmission equipment (2631-1/00) and electronic components (2610-8/00) [Confirmed] — econodata.com.br, casadosdados.com.br
- Device types
- smartphone/notebook battery packs, fast chargers, wearable power systems (smartwatches, earbuds), BLE/Wi-Fi communication modules, IoT-enabled BMS with OTA telemetry; OEM/B2B supply role — components embedded in third-party devices, not finished branded networking gear [Likely] — inventuspower.com, CNAE secondary registrations (casadosdados.com.br)
- Notable products
- Li-ion battery packs (smartphone/notebook), fast/GaN chargers, wearable power, smart BMS designs, docking stations; no consumer-branded networking gear identified [Confirmed] — inventuspower.com/products
- Verified prefixes (all MA-L)
- A4:63:A1, 98:7E:CA, 90:0A:62, 54:09:29, 10:98:5F [Confirmed] — IEEE MA-L / oui.csv. (No MA-M or MA-S assignments exist for this vendor.)
- Analyst note
- A device with one of these OUIs on an enterprise or OT network is almost certainly a smart charger, BMS module, or IoT-adjacent wearable component — not a networking appliance. Treat as an unclassified endpoint warranting device-type verification rather than an elevated network threat. No known CVEs for these prefixes. [Likely] — inferred from CNAE codes + facility reports, not a per-prefix device-type registry.