68:91:D0:E Outstanding Technology Co., Ltd.
Every MAC address from 68:91:D0:E0:00:00 to 68:91:D0:EF:FF:FF belongs to a block the IEEE assigned to Outstanding Technology Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 68:91:D0:E belongs to
Written 68:91:D0:E, 68-91-D0-E or 6891D0E, depending on the system. Look up a full address.
Prefix
68:91:D0:E/28
Organization
Outstanding Technology Co., Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
68:91:D0:E0:00:00
Last address
68:91:D0:EF:FF:FF
Address type
Globally unique, unicast
Registered address
9th floor, New Yaesu bldg., 3-5-12 nihon-bashi Chuo-ku Tokyo JP 103-0027
Parent block
Inside 68:91:D0
This MA-M block is carved from the 24-bit block 68:91:D0, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.