macadress

Siemens AG

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixAC:64:17:00:00:00 /24
Vendor addressWerner-von-Siemens Strasse 50 Amberg DE 92224
Country🇩🇪  Germany
RegisteredAug 25, 2017
Block rangeAC:64:17:00:00:00– AC:64:17: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. Aug 25, 2017 – Apr 18, 2018 Siemens AG - Industrial Automation - EWA name changedaddress changed
  2. Apr 18, 2018 – present Siemens AG

Example addresses in this block

AC:64:17:00:00:00 AC:64:17:7F:FF:FF AC:64:17:FF:FF:FF

Where this block sits

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 00:0B:A3:00:00:00 /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 D0:EB:1A:00:00:00 /24 MA-L EC:1C:5D:00:00:00 /24 MA-L