18:C3:F4:3 General Test Systems
Every MAC address from 18:C3:F4:30:00:00 to 18:C3:F4:3F:FF:FF belongs to a block the IEEE assigned to General Test Systems. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 18:C3:F4:3 belongs to
Written 18:C3:F4:3, 18-C3-F4-3 or 18C3F43, depending on the system. Look up a full address.
Prefix
18:C3:F4:3/28
Organization
General Test Systems
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
18:C3:F4:30:00:00
Last address
18:C3:F4:3F:FF:FF
Address type
Globally unique, unicast
Registered address
Building C–A7 Suite 805, 2190 Liuxian Avenue, Nanshan District Shenzhen Guangdong CN 518055
Parent block
Inside 18:C3:F4
This MA-M block is carved from the 24-bit block 18:C3:F4, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.