40:48:FD:3 RL Controls LLC.
Every MAC address from 40:48:FD:30:00:00 to 40:48:FD:3F:FF:FF belongs to a block the IEEE assigned to RL Controls LLC.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 40:48:FD:3 belongs to
Written 40:48:FD:3, 40-48-FD-3 or 4048FD3, depending on the system. Look up a full address.
Prefix
40:48:FD:3/28
Organization
RL Controls LLC.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
40:48:FD:30:00:00
Last address
40:48:FD:3F:FF:FF
Address type
Globally unique, unicast
Registered address
2 G Gill St Woburn MA US 01801
Parent block
Inside 40:48:FD
This MA-M block is carved from the 24-bit block 40:48:FD, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.