B0:1F:81:4 SHENZHEN YIFANG DIGITAL TECHNOLOGY CO.,LTD.
Every MAC address from B0:1F:81:40:00:00 to B0:1F:81:4F:FF:FF belongs to a block the IEEE assigned to SHENZHEN YIFANG DIGITAL TECHNOLOGY CO.,LTD.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B0:1F:81:4 belongs to
Written B0:1F:81:4, B0-1F-81-4 or B01F814, depending on the system. Look up a full address.
Prefix
B0:1F:81:4/28
Organization
SHENZHEN YIFANG DIGITAL TECHNOLOGY CO.,LTD.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
B0:1F:81:40:00:00
Last address
B0:1F:81:4F:FF:FF
Address type
Globally unique, unicast
Registered address
Building NO.22,23, Fifth Region, Baiwangxin Industrial Park, Songbai Rd., Nanshan Shenzhen Guangdong CN 518108
Parent block
Inside B0:1F:81
This MA-M block is carved from the 24-bit block B0:1F:81, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.
Same organization
Other blocks assigned to SHENZHEN YIFANG DIGITAL TECHNOLOGY CO.,LTD.
1 more block registered under the same name.