18:C3:E4:9 38220
Every MAC address from 18:C3:E4:90:00:00 to 18:C3:E4:9F:FF:FF belongs to a block the IEEE assigned to 38220. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 18:C3:E4:9 belongs to
Written 18:C3:E4:9, 18-C3-E4-9 or 18C3E49, depending on the system. Look up a full address.
Prefix
18:C3:E4:9/28
Organization
38220
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
18:C3:E4:90:00:00
Last address
18:C3:E4:9F:FF:FF
Address type
Globally unique, unicast
Registered address
C/ Mariano Barbacid, 5. 3ª planta Rivas Vaciamadrid Madrid ES 28521
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.