Motorola Mobility LLC, a Lenovo Company

MA-L

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

Prefix0C:71:65:00:00:00 /24

Vendor address222 West Merchandise Mart Plaza Chicago IL US 60654

RegisteredOct 23, 2025

Block range0C:71:65:00:00:00– 0C:71:65: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 →

Example addresses in this block

0C:71:65:00:00:00 0C:71:65:7F:FF:FF 0C:71:65:FF:FF:FF

Where this block sits

Previous 0C:71:5D:00:00:00 /24 Samsung Electronics Co.,Ltd

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

Motorola Mobility LLC, a Lenovo Company holds 128 registered blocks in the IEEE registry, ranking #28 of 33,421 organizations by block count.

Other blocks registered to Motorola Mobility LLC, a Lenovo Company

00:62:01:00:00:00 /24 MA-L 00:B8:B6:00:00:00 /24 MA-L 00:FA:DE:00:00:00 /24 MA-L 04:D3:95:00:00:00 /24 MA-L 08:3F:21:00:00:00 /24 MA-L 08:AA:55:00:00:00 /24 MA-L 08:CC:27:00:00:00 /24 MA-L 0C:7D:B0:00:00:00 /24 MA-L 0C:CB:85:00:00:00 /24 MA-L 0C:EC:8D:00:00:00 /24 MA-L 10:2B:1C:00:00:00 /24 MA-L 14:05:89:00:00:00 /24 MA-L