Ezurio — 8 prefixes (MA-L)

A MAC address beginning with one of Ezurio's eight registered prefixes belongs to Ezurio, a wireless connectivity technology company, and typically appears on embedded RF modules, system-on-modules (SOMs), single-board computers, or IoT devices rather than on end-user consumer electronics.

Ezurio is the current name for what was, until March 2024, "Laird Connectivity" — a UK-founded (2004) Bluetooth/Wi-Fi module specialist acquired by Laird Technologies in 2008, sold to Audax Private Equity in July 2022, and rebranded to unite Laird Connectivity and Boundary Devices under the historic Ezurio name. The company is now headquartered in Akron, Ohio.

IEEE's registry lists eight MA-L blocks for the brand, split across two distinct legal-entity strings: "Ezurio, LLC" (seven blocks, mostly a Zhubei, Taiwan address plus one Cedarburg, WI and one Akron, OH address) and "Ezurio Ltd" (one block, a London address). No MA-M or MA-S assignments were found under the Ezurio name in the cached registry snapshots.

The Akron address on one block matches Ezurio's current public HQ, corroborating the registration. The Zhubei, Taiwan address on five of the eight blocks (likely an inherited Laird manufacturing/engineering office) could not be independently corroborated in this pass and stays unverified. Predecessor-brand modules BT900 and BT820 are named in third-party BRAKTOOTH Bluetooth research, though no specific CVE was located for them.

IEEE assignment

8 MA-L blocks — 00:25:CA, B0:FB:15, EC:C0:7A, D8:03:1A, E8:CB:F5, 18:C2:93, C0:EE:40 (all "Ezurio, LLC"), and 00:16:A4 ("Ezurio Ltd") [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry class

MA-L for all 8 blocks; no MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) entries found under "Ezurio" [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv (cached the IEEE MA-M registry/oui36.csv snapshots)

Company substance

SUBSTANTIVE — active operating company, multi-decade history, 8 OUI blocks across 3 countries, live product catalog, third-party security research on predecessor modules [Confirmed] — https://www.ezurio.com/

HQ / country

50 South Main St, Akron, OH 44308, US (current registry address; matches public HQ) [Confirmed] — https://www.ezurio.com/

Other registry addresses

Zhubei, Taiwan (5 blocks, unconfirmed independently); Cedarburg, WI (1 block); London, UK (1 block, "Ezurio Ltd") [Confirmed as registry data / Unknown for independent corroboration] — https://standards-oui.ieee.org/oui/oui.csv

Company status

active [Confirmed] — https://www.ezurio.com/

Device types

RF modules, SOMs, single-board computers, IoT devices for Wi-Fi/Bluetooth/UWB/LoRaWAN/cellular [Confirmed] — https://www.ezurio.com/products

Company history

ex-Laird Connectivity (2008–2024), ex-Laird PLC UK founding (2004), sold to Audax PE 2022, rebranded Ezurio March 2024 [Confirmed] — https://en.wikipedia.org/wiki/Ezurio

Assignment dates

Unknown / not applicable — IEEE's the IEEE MA-L registry has no date field; no date attributed to IEEE for any of these blocks [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Master status

not yet present in this site's own enrichment records; queued in this site's own enrichment records [Confirmed] — local repo check

Security context

predecessor Laird Connectivity BT900/BT820 modules named in BRAKTOOTH Bluetooth LMP research; no specific CVE found this pass [Likely] — https://asset-group.github.io/disclosures/braktooth/disclosure.html

Related vendors

Laird Connectivity (predecessor brand), Boundary Devices (united under Ezurio brand 2024) [Confirmed] — https://www.ezurio.com/laird-connectivity