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MAC prefix 00:5F:BF

Assigned by the IEEE to Toshiba Corp..

Prefix
00:5F:BF   00-5F-BF   005F.BF
Block type
MA-L (16,777,216 addresses)
Address range
00:5F:BF:00:00:00 – 00:5F:BF:FF:FF:FF
Organization
Toshiba Corp.
Registered address
1-1 Shibaura 1-Chome, Minato-Ku, Tokyo 105-8001, JP
Country
Japan (JP)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 00:5F:BF:00:00:00

Toshiba holds 17 blocks in total: see all. Source: IEEE Registration Authority public listing.