macadress

Siemens AG

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:0B:A3:00:00:00 /24
Vendor addressWerner-von-Siemens-Straße 65 Erlangen Bavaria DE 91052
Country🇩🇪  Germany
RegisteredNov 19, 2002
Block range00:0B:A3:00:00:00– 00:0B:A3: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. Nov 19, 2002 – Mar 27, 2018 Siemens AG, I&S name changedaddress changed
  2. Mar 27, 2018 – present Siemens AG

Example addresses in this block

00:0B:A3:00:00:00 00:0B:A3:7F:FF:FF 00:0B:A3:FF:FF:FF

Where this block sits

Previous 00:0B:A2:00:00:00 /24 Sumitomo Electric Industries, Ltd Next 00:0B:A4:00:00:00 /24 Shiron Satellite Communications Ltd. (1996)

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

Siemens AG holds 23 registered blocks in the IEEE registry, ranking #153 of 33,421 organizations by block count.

Other blocks registered to Siemens AG

00:01:E3:00:00:00 /24 MA-L 00:0E:8C:00:00:00 /24 MA-L 10:DF:FC:00:00:00 /24 MA-L 28:63:36:00:00:00 /24 MA-L 30:B8:51:00:00:00 /24 MA-L 3C:FF:E4:00:00:00 /24 MA-L 40:EC:F8:00:00:00 /24 MA-L 88:3F:99:00:00:00 /24 MA-L A8:6D:04:00:00:00 /24 MA-L AC:64:17:00:00:00 /24 MA-L D0:EB:1A:00:00:00 /24 MA-L EC:1C:5D:00:00:00 /24 MA-L