MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:14:13:00:00:00 /24
Vendor addressWilhelm Hennemann Straße 13 Schwerin Mecklenburg-Vorpommern DE 19061
RegisteredMar 22, 2005
Block range00:14:13:00:00:00– 00:14:13: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. Mar 22, 2005 – Jan 30, 2013 Trebing & Himstedt Prozessautomation GmbH & Co. KG name changedaddress changed
  2. Jan 30, 2013 – Jan 31, 2013 Trebing & Himstedt Prozeßautomation GmbH & Co. KG name changedaddress changed
  3. Jan 31, 2013 – Feb 14, 2013 Trebing & Himstedt Prozessautomation GmbH & Co. KG name changedaddress changed
  4. Feb 14, 2013 – Aug 27, 2015 Trebing & Himstedt Prozeßautomation GmbH & Co. KG name changedaddress changed
  5. Aug 27, 2015 – present Trebing & Himstedt Prozeßautomation 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.

Trebing & Himstedt Prozeßautomation GmbH & Co. KG holds 1 registered blocks in the IEEE registry, ranking #30,458 of 33,427 organizations by block count.