Grundfos Holding

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:14:44:00:00:00 /24
Vendor addressPoul Due Jensensvej 7 Bjerringbro DK DK8850
RegisteredApr 7, 2005
Block range00:14:44:00:00:00– 00:14:44: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 7, 2005 – Mar 27, 2013 Grundfos Electronics name changedaddress changed
  2. Mar 27, 2013 – present Grundfos Holding

Example addresses in this block

Where this block sits

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

Grundfos Holding holds 1 registered blocks in the IEEE registry, ranking #14,024 of 33,421 organizations by block count.