macadress

Knürr GmbH

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:0B:38:00:00:00 /24
Vendor addressMariakirchener Straße 38 Arnstorf Bavaria DE 94424
Country🇩🇪  Germany
RegisteredSep 9, 2002
Block range00:0B:38:00:00:00– 00:0B:38: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. Sep 9, 2002 – Jan 6, 2012 Knuerr AG name changed
  2. Jan 6, 2012 – Jan 30, 2013 Knuerr GmbH name changedaddress changed
  3. Jan 30, 2013 – Jan 31, 2013 Knürr GmbH name changedaddress changed
  4. Jan 31, 2013 – Feb 14, 2013 Knuerr GmbH name changedaddress changed
  5. Feb 14, 2013 – Aug 27, 2015 Knürr GmbH name changedaddress changed
  6. Aug 27, 2015 – present Knürr GmbH

Example addresses in this block

00:0B:38:00:00:00 00:0B:38:7F:FF:FF 00:0B:38:FF:FF:FF

Where this block sits

Previous 00:0B:37:00:00:00 /24 MANUFACTURE DES MONTRES ROLEX SA Next 00:0B:39:00:00:00 /24 Keisoku Giken Co.,Ltd.

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

Knürr GmbH holds 1 registered blocks in the IEEE registry, ranking #17,756 of 33,427 organizations by block count.