3COM EUROPE LTD — 12 prefixes (MA-L)

3COM EUROPE LTD holds 12 IEEE MA-L (OUI) assignments, all registered to the exact organization name "3COM EUROPE LTD" — a grouping distinct from the main "vendor-3com" entry (the US-registered "3Com" block), because the site's slug generator normalizes the two names to different keys. The registrant was 3Com Corporation's UK/European operating subsidiary, headquartered at 3Com Centre / Boundary Way / Peoplebuilding 2, Hemel Hempstead, Hertfordshire (HP2 4NW / HP2 7YU) — 3Com's European center of operations. UK Companies House records 3COM EUROPE LIMITED, company no. 02600346, incorporated 5 April 1991, which entered members' voluntary liquidation on 14 July 2015 and was dissolved 12 September 2018, its last registered office c/o Hewlett-Packard Limited, Amen Corner, Bracknell — consistent with 3Com being acquired by HP in April 2010 and the UK entity later wound down. These prefixes appear on 3Com-brand enterprise networking gear — Ethernet switches, routers, and NICs (e.g. 3Com Baseline and 4500-series switches) — the same device class as the main 3Com block, since 3Com Europe was a regional arm rather than a distinct product line. A data-quality caveat: several rows in the cached IEEE registry carry a garbled "vvvvv" placeholder token in the address field (e.g. "BOUNDARY WAY vvvvv UNITED GB KINGDOM"); this is an artifact of IEEE's own CSV, reproduced verbatim, not a scraping error. As with all OUI data, IEEE publishes no assignment date — any "date registered" seen on third-party lookup tools is a database artifact, not an IEEE fact.

IEEE assignment

12 prefixes → 3COM EUROPE LTD, registered Hemel Hempstead, Hertfordshire, GB [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); 12 IEEE prefixes; zero MA-M and zero MA-S assignments for this exact org name [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry

Registrant identity

UK/European operating subsidiary of 3Com Corporation; distinct slug from the US "vendor-3com" entry (name normalizes to a different key in this site's own tooling) [Confirmed] — this site's own tooling:47-64, /mac/vendor/3com/

HQ / country

3Com Centre / Boundary Way / Peoplebuilding 2, Hemel Hempstead, Hertfordshire, GB (HP2 4NW / HP2 7YU) — three address variants across the 12 rows, same campus over time [Confirmed] — IEEE MA-L

Company status

dissolved. 3COM EUROPE LIMITED, company no. 02600346, incorporated 5 Apr 1991, members' voluntary liquidation 14 Jul 2015, dissolved 12 Sep 2018 [Confirmed] — UK Companies House (find-and-update.company-information.service.gov.uk/company/02600346)

Parent / acquisition

3Com Corporation acquired by Hewlett-Packard April 2010; UK entity later dissolved (last office c/o Hewlett-Packard Limited, Amen Corner, Bracknell) [Confirmed] — Companies House, en.wikipedia.org/wiki/3Com

Device types

3Com-brand enterprise Ethernet switches, routers, and NICs (e.g. Baseline and 4500-series switches) [Likely] — support.hpe.com (3Com switch docs), 3Com switch configuration guides

Verified prefixes (all MA-L, 3COM EUROPE LTD)

00:04:0B, 00:05:1A, 00:1E:C1, 00:22:57, 00:24:73, 00:30:1E, 00:50:99, 00:90:04, 00:D0:96, 08:00:4E, 20:FD:F1, 40:01:C6 [Confirmed] — the IEEE MA-L registry

Date registered

Unknown — IEEE publishes no OUI assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address). A third-party (maclookup.app) "22 April 1998" figure exists but is a database artifact, not an IEEE fact, and is not recorded as the entry date.

[Confirmed as unknown] — the IEEE MA-L registry, maclookup.app/vendors/3com-europe-ltd

IANA reference

not applicable — IANA references apply to protocol registries (ASN/port), not IEEE OUI/MAC vendor blocks; field left blank [Confirmed]

Security context

no CVEs or spoofing campaigns tied specifically to this OUI block were found; devices carrying these prefixes are legacy/end-of-life (parent acquired 2010, UK entity dissolved 2018). Whether these prefixes have any documented MAC-spoofing abuse history is Unknown. [Unknown]

Data-quality note

several cached IEEE rows carry a verbatim "vvvvv"/"vvvvvv" placeholder in the address field (e.g. "BOUNDARY WAY vvvvv UNITED GB KINGDOM") — an IEEE CSV artifact, reproduced as-is, not a repo scraping bug [Confirmed] — the IEEE MA-L registry

Related vendors

vendor-3com (the main US-registered 3Com block, a separate existing enrichment entry)

Analyst note

A 3COM EUROPE LTD OUI on a globally-administered address identifies genuine legacy 3Com-brand European hardware; these are end-of-life identifiers with no active vendor support.