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MAC prefix 00:0D:3A

Assigned by the IEEE to Microsoft Corp..

Prefix
00:0D:3A   00-0D-3A   000D.3A
Block type
MA-L (16,777,216 addresses)
Address range
00:0D:3A:00:00:00 – 00:0D:3A:FF:FF:FF
Organization
Microsoft Corp.
Registered address
One Microsoft Way, Redmond Wa. 98052, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 00:0D:3A:00:00:00

Microsoft Corporation holds 85 blocks in total: see all. Source: IEEE Registration Authority public listing.