macadress

DGS Diagnostics A/S

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1F:23:00:00:00 /24
Vendor addressAudiometer Allé 1 Middelfart DK DK 5500
Country🇩🇰  Denmark
RegisteredDec 31, 2007
Block range00:1F:23:00:00:00– 00:1F:23: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. Dec 31, 2007 – Mar 1, 2025 Interacoustics name changed
  2. Mar 1, 2025 – present DGS Diagnostics A/S

Example addresses in this block

00:1F:23:00:00:00 00:1F:23:7F:FF:FF 00:1F:23:FF:FF:FF

Where this block sits

Previous 00:1F:22:00:00:00 /24 Source Photonics, Inc. Next 00:1F:24:00:00:00 /24 DIGITVIEW TECHNOLOGY CO., LTD.

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

DGS Diagnostics A/S holds 1 registered blocks in the IEEE registry, ranking #10,237 of 33,421 organizations by block count.