70:B3:D5:40:3 Mighty Cube Co., Ltd.
Every MAC address from 70:B3:D5:40:30:00 to 70:B3:D5:40:3F:FF belongs to a block the IEEE assigned to Mighty Cube Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:40:3 belongs to
Written 70:B3:D5:40:3, 70-B3-D5-40-3 or 70B3D5403, depending on the system. Look up a full address.
Prefix
70:B3:D5:40:3/36
Organization
Mighty Cube Co., Ltd.
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:40:30:00
Last address
70:B3:D5:40:3F:FF
Address type
Globally unique, unicast
Registered address
UNIZO Nihonbashihoncho 3-CHome Building 5F 3-8-4 Nihonbashi-honcho Chuo-ku TOKYO JP 103-0023
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.