macadress

DoCoMo Systems, Inc.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:19:60:00:00:00 /24
Vendor addressMeguro Techno Bldg. 2nd Floor Shinagawa-ku Tokyo JP 141-0031
Country🇯🇵  Japan
RegisteredAug 20, 2006
Block range00:19:60:00:00:00– 00:19:60: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

  1. Aug 20, 2006 – Aug 27, 2006 Opticom Inc. name changedaddress changed
  2. Aug 27, 2006 – present DoCoMo Systems, Inc.

Example addresses in this block

00:19:60:00:00:00 00:19:60:7F:FF:FF 00:19:60:FF:FF:FF

Where this block sits

Previous 00:19:5F:00:00:00 /24 Valemount Networks Corporation Next 00:19:61:00:00:00 /24 Blaupunkt Embedded Systems GmbH

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

DoCoMo Systems, Inc. holds 1 registered blocks in the IEEE registry, ranking #10,598 of 33,427 organizations by block count.