Accord Systems, Inc. — 00:40:E9 (MA-L)

Accord Systems, Inc. holds a single IEEE MA-L block, 00:40:E9, registered to the address 572 Valley Way, Milpitas, CA 95035, US — a Silicon Valley location consistent with a late-1990s networking-hardware maker. One MA-L allocation confers roughly 16.7 million addressable MAC slots, so a single block is the norm for a small or single-product vendor rather than a high-volume manufacturer like Apple. Beyond the registry record itself, the company leaves almost no public footprint: no live or archived vendor website tied to this OUI holder, no product documentation, and no industry press were found. The "Accord Systems" name is shared by several unrelated firms (an ACA-compliance SaaS company in Alpharetta, GA, and an industrial maker in Mumbai), none of which is the IEEE registrant — do not conflate them. The device type the prefix shipped on could not be determined and is left Unknown. No CVEs, advisories, or threat-feed references to Accord Systems hardware were found, so there is no specific security signal attached to this prefix; the usual MAC-OUI caveats (spoofing, locally-administered randomization) still apply to any address bearing it.

IEEE assignment

00:40:E9 → ACCORD SYSTEMS, INC. [Confirmed] — IEEE MA-L; corroborated by maclookup.app, cavebear Ethernet vendor list, rst.im

Registry / block size

MA-L (24-bit OUI); single allocation (~16.7M addresses) [Confirmed] — IEEE the IEEE MA-L registry; maclookup.app. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

572 Valley Way, Milpitas, CA 95035, US (registry address) [Confirmed] — IEEE the IEEE MA-L registry

Company status

Unknown — no live or archived vendor website, product docs, or press coverage found; appears dormant or defunct but this is not confirmed [Unknown] — web search (no corroborating source)

Device types

Unknown — IEEE MA-L record carries no device-type annotation; no product list, CVE, or press attribution found [Unknown]

Vendor website

Unknown — no site for the IEEE OUI holder located; unrelated companies share the "Accord Systems" name and must not be conflated [Unknown] — crunchbase.com/organization/accord-systems, accordsystems.org (both unrelated)

Registration date

third-party databases show first-seen 1998-04-22 / last-modified 2015-11-17, but these are database artifacts, NOT IEEE-published registration dates — left null [Likely artifact, not a fact] — maclookup.app/vendors/accord-systems-inc

Security context

no CVEs, security advisories, or threat-intel references to Accord Systems, Inc. hardware found [Confirmed] — cvedetails.com, nvd.nist.gov

Analyst note

a single 00:40:E9 address reliably maps to this registrant for asset-classification purposes, but the absence of an active vendor presence means device-type and lifecycle context cannot be established; treat OUI alone as identity-of-record only, never as proof of hardware type.