macadress

Ing. Büro Dr. Beutlhauser

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:0B:41:00:00:00 /24
Vendor addressRoemerweg 4 Grassau DE D-83224
Country🇩🇪  Germany
RegisteredOct 14, 2002
Block range00:0B:41:00:00:00– 00:0B:41: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. Oct 14, 2002 – Jan 30, 2013 Ing. Buero Dr. Beutlhauser name changed
  2. Jan 30, 2013 – Jan 31, 2013 Ing. Büro Dr. Beutlhauser name changed
  3. Jan 31, 2013 – Feb 14, 2013 Ing. Buero Dr. Beutlhauser name changed
  4. Feb 14, 2013 – Aug 27, 2015 Ing. Büro Dr. Beutlhauser name changedaddress changed
  5. Aug 27, 2015 – present Ing. Büro Dr. Beutlhauser

Example addresses in this block

00:0B:41:00:00:00 00:0B:41:7F:FF:FF 00:0B:41:FF:FF:FF

Where this block sits

Previous 00:0B:40:00:00:00 /24 Cambridge Industries Group (CIG) Next 00:0B:42:00:00:00 /24 commax Co., Ltd.

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

Ing. Büro Dr. Beutlhauser holds 1 registered blocks in the IEEE registry, ranking #16,026 of 33,427 organizations by block count.