C4:E1:7C U2S co.
Every MAC address from C4:E1:7C:00:00:00 to C4:E1:7C:FF:FF:FF belongs to a block the IEEE assigned to U2S co.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who C4:E1:7C belongs to
Written C4:E1:7C, C4-E1-7C or C4E17C, depending on the system. Look up a full address.
Prefix
C4:E1:7C
Organization
U2S co.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
C4:E1:7C:00:00:00
Last address
C4:E1:7C:FF:FF:FF
Address type
Globally unique, unicast
Registered address
104-706, SK Ventium Building, 522, Dangjeong-Dong Gunpo-si Geonggi-do KR 435-776