B0:1F:81:2 Private
Every MAC address from B0:1F:81:20:00:00 to B0:1F:81:2F:FF:FF belongs to a block the IEEE assigned to Private. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B0:1F:81:2 belongs to
Written B0:1F:81:2, B0-1F-81-2 or B01F812, depending on the system. Look up a full address.
Prefix
B0:1F:81:2/28
Organization
Private
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
B0:1F:81:20:00:00
Last address
B0:1F:81:2F:FF:FF
Address type
Globally unique, unicast
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.