8C:1F:64:B9:4 Private
Every MAC address from 8C:1F:64:B9:40:00 to 8C:1F:64:B9:4F:FF belongs to a block the IEEE assigned to Private. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 8C:1F:64:B9:4 belongs to
Written 8C:1F:64:B9:4, 8C-1F-64-B9-4 or 8C1F64B94, depending on the system. Look up a full address.
Prefix
8C:1F:64:B9:4/36
Organization
Private
Registry
MA-S (36 bits)
Addresses
4,096
First address
8C:1F:64:B9:40:00
Last address
8C:1F:64:B9:4F:FF
Address type
Globally unique, unicast
Parent block
Inside 8C:1F:64
This MA-S block is carved from the 24-bit block 8C:1F:64, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.