macadress

Beijer Electronics Corp.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:12:77:00:00:00 /24
Vendor address11F-1, No. 108, MinQuan Rd. Xindian City Taipei TW 231
Country🇹🇼  Taiwan
RegisteredSep 29, 2004
Block range00:12:77:00:00:00– 00:12:77: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. Sep 29, 2004 – Jul 6, 2023 Korenix Technologies Co., Ltd. name changed
  2. Jul 6, 2023 – present Beijer Electronics Corp.

Example addresses in this block

00:12:77:00:00:00 00:12:77:7F:FF:FF 00:12:77:FF:FF:FF

Where this block sits

Previous 00:12:76:00:00:00 /24 CG Power Systems Ireland Limited Next 00:12:78:00:00:00 /24 International Bar Code

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

Beijer Electronics Corp. holds 1 registered blocks in the IEEE registry, ranking #6,461 of 33,427 organizations by block count.