Notebook Development Lab. Lenovo Japan Ltd.

MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix00:06:1B:00:00:00 /24

Vendor address1623-14 Shimotsuruma JP 242-8502

RegisteredJun 4, 2001

Block range00:06:1B:00:00:00– 00:06:1B:FF:FF:FF

Address capacity16,777,216

AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority

TransmissionUnicast: addressed to a single device

SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Ownership timeline

Jun 4, 2001 – Oct 22, 2007 Portable Systems, IBM Japan Co, Ltd name changed
Oct 22, 2007 – present Notebook Development Lab. Lenovo Japan Ltd.

Example addresses in this block

00:06:1B:00:00:00 00:06:1B:7F:FF:FF 00:06:1B:FF:FF:FF

Where this block sits

Previous 00:06:1A:00:00:00 /24 Zetari Inc. Next 00:06:1C:00:00:00 /24 Hoshino Metal Industries, Ltd.

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Notebook Development Lab. Lenovo Japan Ltd. holds 1 registered blocks in the IEEE registry, ranking #21,591 of 33,427 organizations by block count.