macadress

Mechatronic Brick Aps

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:12:CA:00:00:00 /24
Vendor addressAlsion 2 6400 Sonderborg DK
Country🇩🇰  Denmark
RegisteredNov 16, 2004
Block range00:12:CA:00:00:00– 00:12:CA: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. Nov 16, 2004 – Feb 9, 2008 Hansen Telecom name changedaddress changed
  2. Feb 9, 2008 – present Mechatronic Brick Aps

Example addresses in this block

00:12:CA:00:00:00 00:12:CA:7F:FF:FF 00:12:CA:FF:FF:FF

Where this block sits

Previous 00:12:C9:00:00:00 /24 Commscope Next 00:12:CB:00:00:00 /24 CSS Inc.

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

Mechatronic Brick Aps holds 1 registered blocks in the IEEE registry, ranking #19,439 of 33,427 organizations by block count.