4C:91:7A:C Alibaba (Beijing) Software Service Inc.
Every MAC address from 4C:91:7A:C0:00:00 to 4C:91:7A:CF:FF:FF belongs to a block the IEEE assigned to Alibaba (Beijing) Software Service Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 4C:91:7A:C belongs to
Written 4C:91:7A:C, 4C-91-7A-C or 4C917AC, depending on the system. Look up a full address.
Prefix
4C:91:7A:C/28
Organization
Alibaba (Beijing) Software Service Inc.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
4C:91:7A:C0:00:00
Last address
4C:91:7A:CF:FF:FF
Address type
Globally unique, unicast
Registered address
No. 301, 3 floor, 9 building, four district, Wangjing East Garden, Chaoyang District, Beijing Beijing CN 100102
Parent block
Inside 4C:91:7A
This MA-M block is carved from the 24-bit block 4C:91:7A, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.