3C:EC:EF Super Micro Computer, Inc.
Every MAC address from 3C:EC:EF:00:00:00 to 3C:EC:EF:FF:FF:FF belongs to a block the IEEE assigned to Super Micro Computer, Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 3C:EC:EF belongs to
Written 3C:EC:EF, 3C-EC-EF or 3CECEF, depending on the system. Look up a full address.
Prefix
3C:EC:EF
Organization
Super Micro Computer, Inc.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
3C:EC:EF:00:00:00
Last address
3C:EC:EF:FF:FF:FF
Address type
Globally unique, unicast
Registered address
980 Rock Ave San Jose CA US 95131