70:B3:D5:D2:8 Toshiba Electron Tubes & Devices Co., Ltd.
Every MAC address from 70:B3:D5:D2:80:00 to 70:B3:D5:D2:8F:FF belongs to a block the IEEE assigned to Toshiba Electron Tubes & Devices Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:D2:8 belongs to
Written 70:B3:D5:D2:8, 70-B3-D5-D2-8 or 70B3D5D28, depending on the system. Look up a full address.
Prefix
70:B3:D5:D2:8/36
Organization
Toshiba Electron Tubes & Devices Co., Ltd.
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:D2:80:00
Last address
70:B3:D5:D2:8F:FF
Address type
Globally unique, unicast
Registered address
1385, Shimoishigami Otawara-shi Tochigi JP 324-8550
Parent block
Inside 70:B3:D5
This MA-S block is carved from the 24-bit block 70:B3:D5, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.