macadress

Kleinknecht GmbH, Ing. Büro

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:05:9C:00:00:00 /24
Vendor addressBachstraße 30 DE
Country🇩🇪  Germany
RegisteredJun 4, 2001
Block range00:05:9C:00:00:00– 00:05:9C: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. Jun 4, 2001 – Jan 30, 2013 Kleinknecht GmbH, Ing. Buero name changedaddress changed
  2. Jan 30, 2013 – Jan 31, 2013 Kleinknecht GmbH, Ing. Büro name changedaddress changed
  3. Jan 31, 2013 – Feb 14, 2013 Kleinknecht GmbH, Ing. Buero name changedaddress changed
  4. Feb 14, 2013 – Aug 27, 2015 Kleinknecht GmbH, Ing. Büro name changedaddress changed
  5. Aug 27, 2015 – present Kleinknecht GmbH, Ing. Büro

Example addresses in this block

00:05:9C:00:00:00 00:05:9C:7F:FF:FF 00:05:9C:FF:FF:FF

Where this block sits

Previous 00:05:9B:00:00:00 /24 Cisco Systems, Inc Next 00:05:9D:00:00:00 /24 Daniel Computing Systems, Inc.

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

Kleinknecht GmbH, Ing. Büro holds 1 registered blocks in the IEEE registry, ranking #17,734 of 33,421 organizations by block count.