Brother Industries — ~7 prefixes (MA-L)

Brother holds about 7 MA-L blocks registered as "Brother industries, LTD." (casing varies — some blocks render "Brother Industries, LTD." with a capital "I"; Wireshark uses the capitalized form) at 15-1, Naeshirocho, Mizuho-ku, Nagoya, Japan. These OUIs appear on laser and inkjet printers, multifunction printers (MFPs), P-touch label printers, scanners, and some networked sewing machines. One legacy block (00:80:77) carries an odd placeholder address in the IEEE record ("RESEARCH LABORATORY, piscatawa 12345, JP" — a mismatched US-style town/ZIP) — a useful tell that it's an early-2000s registration. The brand maps cleanly to the device maker. For triage, Brother gear is extremely common in homes and small offices, so a Brother OUI almost always identifies a network printer or MFP — a frequently-overlooked, rarely-patched device class worth tracking in inventory.

IEEE assignment

~7 prefixes → Brother industries, LTD., registered Nagoya, Japan [Confirmed] — IEEE MA-L

Registry / block size

MA-L; ~7 blocks (~117.4M addresses); last updated 2025-07-01 (maclookup.app API 'updated' field) [Confirmed] — maclookup.app (IEEE-derived). 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 "first registered" date from third-party tools is a database artifact, not an IEEE fact.

HQ / country

15-1, Naeshirocho, Mizuho-ku, Nagoya 467-8561, Japan [Confirmed] — IEEE MA-L

Company status

active (Brother Industries, Ltd.) [Confirmed] — brother.com

Device types

laser/inkjet printers, MFPs, label printers, scanners, some networked sewing machines [Confirmed] — maclookup.app

Notable products

HL/MFC laser series, P-touch label printers

Verified prefix sample

00:80:77, 00:1B:A9, 3C:2A:F4 (3C:2A:F4 renders the capitalized "Brother Industries, LTD." variant), B4:22:00, 94:DD:F8 [Confirmed] — maclookup.app

Special note

IEEE casing varies — "Brother industries, LTD." and the capitalized "Brother Industries, LTD." (Wireshark uses the capitalized form). Legacy block 00:80:77 carries an odd placeholder address ("RESEARCH LABORATORY, piscatawa 12345, JP") in the IEEE record — a tell of an early-2000s registration.

[Confirmed] — maclookup.app/macaddress/008077

Related vendors

none significant

Analyst note

Extremely common in homes and small offices; a Brother OUI almost always identifies a network printer/MFP — a frequently-overlooked, rarely-patched device worth tracking.