78:CA:83:5 Huatune Technology (Shanghai) Co., Ltd.
Every MAC address from 78:CA:83:50:00:00 to 78:CA:83:5F:FF:FF belongs to a block the IEEE assigned to Huatune Technology (Shanghai) Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 78:CA:83:5 belongs to
Written 78:CA:83:5, 78-CA-83-5 or 78CA835, depending on the system. Look up a full address.
Prefix
78:CA:83:5/28
Organization
Huatune Technology (Shanghai) Co., Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
78:CA:83:50:00:00
Last address
78:CA:83:5F:FF:FF
Address type
Globally unique, unicast
Registered address
No.8 Longxi RD Shanghai Changning District CN 200336
Parent block
Inside 78:CA:83
This MA-M block is carved from the 24-bit block 78:CA:83, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.