Microchip Technology's MAC footprint spans two IEEE registrants that should be aliased to one family: "Microchip Technology Inc." (15 prefixes; MA-L) and the legacy "Atmel Corporation" (2 prefixes; MA-L). Verified Microchip samples include 00:04:A3, 00:1E:C0, 68:27:19, 80:1F:12, D8:80:39, and E8:EB:1B. The registered address is 2355 W. Chandler Blvd., Chandler, Arizona. These OUIs appear on microcontrollers, Wi-Fi/Bluetooth modules and chipsets, and embedded/IoT silicon — Microchip and Atmel silicon carry the burned-in MAC on IoT and embedded devices. The corporate history explains the second registrant: Microchip's acquisition of Atmel was announced 19 January 2016, valuing Atmel at about $3.56 billion in equity (~$3.40 billion enterprise value), and Microchip also acquired Roving Networks; "Atmel Corporation" persists as a distinct legacy registrant. The key analyst point is the chipset pattern: a Microchip/Atmel OUI usually identifies a device built on their silicon regardless of brand — a chipset-OUI flag like Espressif or TI. For triage, a Microchip/Atmel OUI usually flags an embedded/IoT endpoint built on their silicon, so treat it as a chipset signal rather than a brand.
- IEEE assignment
- two entities — "Microchip Technology Inc." (15; MA-L), legacy "Atmel Corporation" (2; MA-L), registered Chandler, AZ, US [Confirmed] — IEEE MA-L
- Registry / block size
- MA-L; ~17 blocks across both [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- 2355 W. Chandler Blvd., Chandler, AZ 85224, US [Confirmed] — maclookup.app
- Company status
- active; acquired Atmel (announced 2016-01-19, ~$3.56B equity / ~$3.40B EV); also acquired Roving Networks [Confirmed] — Microchip/Atmel SEC 8-K
- Device types
- microcontrollers, Wi-Fi/BT modules and chipsets, embedded/IoT silicon with burned-in MACs [Confirmed] — maclookup.app
- Notable products
- PIC/AVR MCUs, Wi-Fi/BT modules, embedded/IoT silicon
- Verified prefix sample
- 00:04:A3, 00:1E:C0, 68:27:19, 80:1F:12, D8:80:39, E8:EB:1B [Confirmed] — maclookup.app
- Special note
- A Microchip/Atmel OUI usually identifies a device built on their silicon regardless of brand — a chipset-OUI flag like Espressif/TI. "Atmel Corporation" persists as a distinct legacy registrant. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Atmel (acquired 2016); Roving Networks (acquired)
- Analyst note
- A Microchip/Atmel OUI usually flags a device built on their silicon regardless of brand — treat as a chipset signal, especially for embedded/IoT endpoints.