30:BB:28:9 Shenzhen Shuangyunhe Technology Co.,Ltd.
Every MAC address from 30:BB:28:90:00:00 to 30:BB:28:9F:FF:FF belongs to a block the IEEE assigned to Shenzhen Shuangyunhe Technology Co.,Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 30:BB:28:9 belongs to
Written 30:BB:28:9, 30-BB-28-9 or 30BB289, depending on the system. Look up a full address.
Prefix
30:BB:28:9/28
Organization
Shenzhen Shuangyunhe Technology Co.,Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
30:BB:28:90:00:00
Last address
30:BB:28:9F:FF:FF
Address type
Globally unique, unicast
Registered address
2-705, Building T2, Haigu Technology Building, Luozu Community Shenzhen Guangdong CN 518108
Parent block
Inside 30:BB:28
This MA-M block is carved from the 24-bit block 30:BB:28, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.