8C:1F:64:6A:B Toho System Co., Ltd.
Every MAC address from 8C:1F:64:6A:B0:00 to 8C:1F:64:6A:BF:FF belongs to a block the IEEE assigned to Toho System Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 8C:1F:64:6A:B belongs to
Written 8C:1F:64:6A:B, 8C-1F-64-6A-B or 8C1F646AB, depending on the system. Look up a full address.
Prefix
8C:1F:64:6A:B/36
Organization
Toho System Co., Ltd.
Registry
MA-S (36 bits)
Addresses
4,096
First address
8C:1F:64:6A:B0:00
Last address
8C:1F:64:6A:BF:FF
Address type
Globally unique, unicast
Registered address
1-34-10, Hoshidakita Katano-shi Osaka JP 576-0017
Parent block
Inside 8C:1F:64
This MA-S block is carved from the 24-bit block 8C:1F:64, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.