20:B3:7F:0 B810 SPA
Every MAC address from 20:B3:7F:00:00:00 to 20:B3:7F:0F:FF:FF belongs to a block the IEEE assigned to B810 SPA. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 20:B3:7F:0 belongs to
Written 20:B3:7F:0, 20-B3-7F-0 or 20B37F0, depending on the system. Look up a full address.
Prefix
20:B3:7F:0/28
Organization
B810 SPA
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
20:B3:7F:00:00:00
Last address
20:B3:7F:0F:FF:FF
Address type
Globally unique, unicast
Registered address
Via Enzo Lazzaretti, 2/1 REGGIO EMILIA Reggio Emilia IT 42122
Parent block
Inside 20:B3:7F
This MA-M block is carved from the 24-bit block 20:B3:7F, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.