18:C3:E4:4 Trusted Technology Solutions, Inc.
Every MAC address from 18:C3:E4:40:00:00 to 18:C3:E4:4F:FF:FF belongs to a block the IEEE assigned to Trusted Technology Solutions, Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 18:C3:E4:4 belongs to
Written 18:C3:E4:4, 18-C3-E4-4 or 18C3E44, depending on the system. Look up a full address.
Prefix
18:C3:E4:4/28
Organization
Trusted Technology Solutions, Inc.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
18:C3:E4:40:00:00
Last address
18:C3:E4:4F:FF:FF
Address type
Globally unique, unicast
Registered address
346 River Street Lemont IL US 60439
Parent block
Inside 18:C3:E4
This MA-M block is carved from the 24-bit block 18:C3:E4, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.