Atmel Corporation — 2 prefixes (MA-L)
Summary
- // what this is
- Atmel is registered to MAC prefix
00:04:25and 1 more in the IEEE OUI database. When a device's MAC address begins with00:04:25, that block was registered by Atmel — the OUI identifies the maker of the network hardware, which is not always the brand on the device. Atmel was acquired; the registration remains on record with IEEE. - // analyst note
- An Atmel OUI (00:04:25 or FC:C2:3D) on a globally-administered address indicates genuine Atmel-manufactured or Atmel-reference-design hardware, but Atmel held only 2 IEEE blocks in total, so most third-party devices built around Atmel chips carry the OEM's own OUI rather than Atmel's.
About this vendor.
A MAC address starting with 00:04:25 or FC:C2:3D belongs to Atmel Corporation, a US semiconductor maker whose two IEEE MA-L allocations identify Ethernet-capable hardware built around its own microcontroller and wireless-transceiver silicon or a reference design derived from it.
Atmel was founded in 1984 in San Jose, CA, and became best known for its AVR and ARM-based microcontrollers, its AT86RF2xx family of 802.15.4/ZigBee RF transceivers, and its CryptoAuthentication security chips. Microchip Technology acquired Atmel in 2016 for roughly $3.56 billion, folding the Atmel brand into its own product lines.
Atmel's IEEE footprint is small next to mainstream networking vendors: just two MA-L blocks, with no MA-M or MA-S sub-registrations found beneath either one. No datasheet, teardown, or other source ties either specific block to a named Atmel product family, so device-type attribution beyond "Atmel-manufactured or Atmel-derived hardware" is Unknown at the block level.
One historical security record confirms real network deployment: CVE-2001-0514 describes an SNMP flaw in the Atmel-designed 802.11b VNET-B access-point reference platform, resold as the Netgear ME102 and Linksys WAP11, which accepted arbitrary SNMP community strings with MIB write access and let a remote attacker read WEP keys. That vulnerability ties to an Atmel-designed product line, not to either OUI block specifically.
- Vendor
- Atmel Corporation (acquired by Microchip Technology, 2016)
- OUI prefixes
- 00:04:25, FC:C2:3D (both MA-L / 24-bit)
- Device class
- Embedded microcontroller and wireless-transceiver hardware (AVR/ARM MCUs, AT86RF2xx 802.15.4/ZigBee radios); no confirmed device model tied to either specific block
- Company status
- Acquired by Microchip Technology in 2016 (~$3.56B); Atmel brand folded into Microchip's product lines
- Also seen on
- Atmel-designed 802.11b VNET-B access-point reference platform, resold as Netgear ME102 and Linksys WAP11 (CVE-2001-0514)
- IEEE assignment
- 00:04:25 → Atmel Corporation, Multimedia & Communications Group, Morrisville, NC 27560, US [Confirmed] — the IEEE MA-L registry 000425
- IEEE assignment
- FC:C2:3D → Atmel Corporation, 1150 E Cheyenne Mtn Blvd, Colorado Springs, CO 80906, US [Confirmed] — the IEEE MA-L registry FCC23D
- Registry / block size
- MA-L (24-bit OUI) x2; no MA-M or MA-S sub-registrations found [Confirmed] — the IEEE MA-M registry (no matches), the IEEE MA-S registry (no matches)
- Company identity
- Atmel Corporation, semiconductor company founded 1984 in San Jose, CA [Confirmed] — https://en.wikipedia.org/wiki/Atmel
- Company status
- acquired by Microchip Technology in 2016 for ~$3.56B; Atmel brand absorbed into Microchip's product lines [Confirmed] — https://ir.microchip.com/news-events/press-releases/detail/565/microchip-technology-to-acquire-atmel, https://www.jonesday.com/en/practices/experience/2016/04/atmel-acquired-by-microchip-technology-for-356-billion
- Notable products
- AVR and ARM-based microcontrollers, AT86RF2xx 802.15.4/ZigBee RF transceivers, CryptoAuthentication security chips [Confirmed] — https://www.microchip.com/en-us/product/at86rf233
- Device-to-block linkage
- no vendor datasheet, teardown, or other source found tying either specific OUI block (00:04:25 or FC:C2:3D) to a named Atmel product family [Unknown] — no corroborating source found
- Security history
- CVE-2001-0514 — SNMP flaw in the Atmel-designed 802.11b VNET-B access-point reference design (v1.3 and earlier), resold as the Netgear ME102 and Linksys WAP11; allowed a remote attacker to read WEP keys via arbitrary SNMP community strings with MIB write access[Confirmed] — https://www.cvedetails.com/cve/CVE-2001-0514/, https://www.tenable.com/cve/CVE-2001-0514
- Additional CVE search
- a pull of cvedetails.com's full Atmel vendor CVE list returned HTTP 403; no other CVE confirmed as of an August 2026 search [Unknown] — https://www.cvedetails.com (403 on full-list pull)
- Third-party date artifact
- maclookup.app lists "registered 2000-11-09 / last updated 2015-11-17" for Atmel's OUI blocks — this is a third-party database scrape, not an IEEE-published fact; IEEE's MA-L registry carries no assignment-date column [Confirmed] — https://maclookup.app/vendors/atmel-corporation