Lexmark holds about 5 MA-L blocks registered as "LEXMARK INTERNATIONAL, INC." at 740 New Circle Road, Lexington, Kentucky. Verified samples include 00:04:00, 00:20:00, 00:21:B7, 00:84:ED, and 78:8C:77. These OUIs appear on laser printers, multifunction printers (MFPs), and enterprise imaging devices. Unlike the ODMs and chipset makers in this batch, a Lexmark OUI reliably maps to the Lexmark brand — network printers are common, durable enterprise assets that are easy to fingerprint. The corporate history: Lexmark was carved out of IBM's Information Products division via a leveraged buyout by private-equity firm Clayton, Dubilier & Rice, completed 27 March 1991 (IBM retained roughly a 10% stake), and went public on the NYSE on 15 November 1995. It was later acquired by an Apex Technology/PAG/Legend Capital (Ninestar) consortium in 2016, and Xerox completed its acquisition of Lexmark on 1 July 2025 for $1.5 billion (inclusive of net debt and assumed liabilities). Post-2025, Lexmark is corporately part of Xerox, but its OUIs and branding remain Lexmark. For triage, a Lexmark OUI reliably maps to a Lexmark-brand network printer or MFP — a stable enterprise asset signal.
- IEEE assignment
- ~5 prefixes → "LEXMARK INTERNATIONAL, INC.", registered Lexington, KY, US [Confirmed] — IEEE MA-L
- Registry / block size
- MA-L; ~5 blocks [Confirmed] — maclookup.app (IEEE-derived). NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" from third-party tools is a database artifact, not an IEEE fact.
- HQ / country
- 740 New Circle Road, Lexington, KY 40550, US [Confirmed] — maclookup.app
- Company status
- active, now a Xerox subsidiary; carved out of IBM via leveraged buyout (Clayton, Dubilier & Rice), completed 1991-03-27 (IBM retained ~10%); NYSE IPO 1995-11-15; acquired by Apex/PAG/Legend (Ninestar) consortium (2016); Xerox completed acquisition 2025-07-01 ($1.5B incl. net debt/assumed liabilities) [Confirmed] — UPI archives, Wikipedia, Xerox Holdings press release
- Device types
- laser printers, MFPs, enterprise imaging [Confirmed] — maclookup.app
- Notable products
- Lexmark laser printers and MFPs
- Verified prefix sample
- 00:04:00, 00:20:00, 00:21:B7, 00:84:ED, 78:8C:77 [Confirmed] — maclookup.app, cleancss.com
- Special note
- Unlike the ODMs/chipset makers in this batch, a Lexmark OUI = the Lexmark brand. Formed by a 1991 CD&R leveraged buyout of IBM's Information Products division (NOT an equity spin-off). Now corporately part of Xerox (acquisition completed 2025-07-01), but OUIs and branding remain Lexmark. [Confirmed]
- Related vendors
- now under Xerox Holdings Corporation (parent since 2025)
- Analyst note
- A Lexmark OUI reliably maps to a Lexmark-brand network printer/MFP — a stable enterprise asset signal; post-2025 it is corporately part of Xerox but its OUIs and branding remain Lexmark.