Siemens AG

MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix40:EC:F8:00:00:00 /24

Vendor addressI IS MS EDM Munich Germany DE 85630

RegisteredSep 11, 2009

Block range40:EC:F8:00:00:00– 40:EC:F8: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 →

Example addresses in this block

40:EC:F8:00:00:00 40:EC:F8:7F:FF:FF 40:EC:F8:FF:FF:FF

Where this block sits

Next 40:ED:00:00:00:00 /24 TP-Link Systems Inc

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 00:0B: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 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