Microsoft Corporation

MA-L

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

Prefix00:1D:D8:00:00:00 /24

Vendor addressOne Microsoft Way Redmond Washington US 98052-6399

RegisteredSep 25, 2007

Block range00:1D:D8:00:00:00– 00:1D:D8: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

00:1D:D8:00:00:00 00:1D:D8:7F:FF:FF 00:1D:D8:FF:FF:FF

Where this block sits

Previous 00:1D:D7:00:00:00 /24 Algolith Next 00:1D:D9:00:00:00 /24 Hon Hai Precision Ind. Co.,Ltd.

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

Microsoft Corporation holds 106 registered blocks in the IEEE registry, ranking #32 of 33,421 organizations by block count.

Other blocks registered to Microsoft Corporation

00:03:FF:00:00:00 /24 MA-L 00:12:5A:00:00:00 /24 MA-L 00:15:5D:00:00:00 /24 MA-L 00:17:FA:00:00:00 /24 MA-L 00:22:48:00:00:00 /24 MA-L 00:25:AE:00:00:00 /24 MA-L 04:27:28:00:00:00 /24 MA-L 08:35:7D:00:00:00 /24 MA-L 0C:1B:7B:00:00:00 /24 MA-L 0C:35:26:00:00:00 /24 MA-L 0C:41:3E:00:00:00 /24 MA-L 0C:E7:25:00:00:00 /24 MA-L