28:FD:80:4 Digital Signal Corp
Every MAC address from 28:FD:80:40:00:00 to 28:FD:80:4F:FF:FF belongs to a block the IEEE assigned to Digital Signal Corp. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 28:FD:80:4 belongs to
Written 28:FD:80:4, 28-FD-80-4 or 28FD804, depending on the system. Look up a full address.
Prefix
28:FD:80:4/28
Organization
Digital Signal Corp
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
28:FD:80:40:00:00
Last address
28:FD:80:4F:FF:FF
Address type
Globally unique, unicast
Registered address
14000 Thunderbolt Place Chantilly VA US 20151
Parent block
Inside 28:FD:80
This MA-M block is carved from the 24-bit block 28:FD:80, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.