MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:15:3B:00:00:00 /24
Vendor addressNeu- Galliner Weg 1 Mecklenburg-Vorpommern DE
RegisteredJul 21, 2005
Block range00:15:3B:00:00:00– 00:15:3B: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. Jul 21, 2005 – Nov 7, 2009 EMH Elektrizitätszähler GmbH & CoKG name changed
  2. Nov 7, 2009 – Feb 6, 2010 EMH Elektrizitätszähler GmbH & CoKG name changed
  3. Feb 6, 2010 – Aug 24, 2010 EMH Elektrizitätszähler GmbH & CoKG name changed
  4. Aug 24, 2010 – Aug 25, 2010 EMH Elektrizitätszähler GmbH & CoKG name changed
  5. Aug 25, 2010 – Apr 20, 2011 EMH Elektrizitätszähler GmbH & CoKG name changed
  6. Apr 20, 2011 – present EMH Metering GmbH & Co. KG

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.

EMH Metering GmbH & Co. KG holds 2 registered blocks in the IEEE registry, ranking #1,963 of 33,427 organizations by block count.

Other blocks registered to EMH Metering GmbH & Co. KG