macadress

Hottinger Brüel & Kjær A/S

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:80:DA:00:00:00 /24
Vendor addressTeknikerbyen 28 Virum DK DK-2830
Country🇩🇰  Denmark
RegisteredApr 22, 1998
Block range00:80:DA:00:00:00– 00:80:DA: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. Apr 22, 1998 – Jan 6, 2012 BRUEL & KJAER name changedaddress changed
  2. Jan 6, 2012 – Nov 10, 2021 Bruel & Kjaer Sound & Vibration Measurement A/S name changedaddress changed
  3. Nov 10, 2021 – present Hottinger Brüel & Kjær A/S

Example addresses in this block

00:80:DA:00:00:00 00:80:DA:7F:FF:FF 00:80:DA:FF:FF:FF

Where this block sits

Previous 00:80:D9:00:00:00 /24 EMK Elektronik GmbH & Co. KG Next 00:80:DB:00:00:00 /24 GRAPHON CORPORATION

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

Hottinger Brüel & Kjær A/S holds 1 registered blocks in the IEEE registry, ranking #15,138 of 33,427 organizations by block count.