Xiaomi Communications Co Ltd

MA-L

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

Prefix4C:55:B2:00:00:00 /24

Vendor address#019, 9th Floor, Building 6, 33 Xi'erqi Middle Road Beijing Haidian District CN 100085

RegisteredDec 18, 2025

Block range4C:55:B2:00:00:00– 4C:55:B2: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

4C:55:B2:00:00:00 4C:55:B2:7F:FF:FF 4C:55:B2:FF:FF:FF

Where this block sits

Next 4C:55:B8:00:00:00 /24 Turkcell Teknoloji

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

Xiaomi Communications Co Ltd holds 241 registered blocks in the IEEE registry, ranking #12 of 33,421 organizations by block count.

Other blocks registered to Xiaomi Communications Co Ltd

00:9E:C8:00:00:00 /24 MA-L 00:C3:0A:00:00:00 /24 MA-L 00:EC:0A:00:00:00 /24 MA-L 04:10:6B:00:00:00 /24 MA-L 04:B1:67:00:00:00 /24 MA-L 04:C8:07:00:00:00 /24 MA-L 04:D1:3A:00:00:00 /24 MA-L 04:E5:98:00:00:00 /24 MA-L 08:1C:6E:00:00:00 /24 MA-L 08:25:25:00:00:00 /24 MA-L 08:B3:39:00:00:00 /24 MA-L 0C:07:DF:00:00:00 /24 MA-L