TOKYO DENSHI SEKEI CO.

MA-L

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

Prefix00:C0:A1:00:00:00 /24

Vendor address255-1 RENKOJI, TAMA-SHI JAPAN JP 206

RegisteredApr 22, 1998

Block range00:C0:A1:00:00:00– 00:C0:A1: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

00:C0:A1:00:00:00 00:C0:A1:7F:FF:FF 00:C0:A1:FF:FF:FF

Where this block sits

Previous 00:C0:A0:00:00:00 /24 ADVANCE MICRO RESEARCH, INC. Next 00:C0:A2:00:00:00 /24 INTERMEDIUM A/S

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

TOKYO DENSHI SEKEI CO. holds 1 registered blocks in the IEEE registry, ranking #30,216 of 33,427 organizations by block count.