Microsoft Corporation - MAC Prefix 487B2F (MA-L)

What this means

The IEEE assigned the MA-L block 487B2F to Microsoft Corporation. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 48:7B:2F, it is Microsoft Corporation hardware.

Frequently Asked Questions

Who owns MAC prefix 487B2F?

487B2F is registered to Microsoft Corporation in the IEEE MA-L registry.

What does the MA-L registry type mean?

An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Microsoft Corporation's block covers 16,777,216 addresses.

What devices use 487B2F?

Any network device with a MAC address starting 48:7B:2F was manufactured by or for Microsoft Corporation.

Other Microsoft Corporation prefixes

Microsoft Corporation holds 107 registered blocks in total.

OUI prefix	487B2F
Vendor	Microsoft Corporation
Registry	MA-L (24-bit, large block)
Block size	16,777,216 addresses
Country	US
Other blocks by this vendor	107 total
Example MAC	48:7B:2F:00:00:00