00:0C:3F Cogent Defence & Security Networks,
Every MAC address from 00:0C:3F:00:00:00 to 00:0C:3F:FF:FF:FF belongs to a block the IEEE assigned to Cogent Defence & Security Networks,. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:0C:3F belongs to
Written 00:0C:3F, 00-0C-3F or 000C3F, depending on the system. Look up a full address.
Prefix
00:0C:3F
Organization
Cogent Defence & Security Networks,
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:0C:3F:00:00:00
Last address
00:0C:3F:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Meadows Road, Newport, South Wales, GB NP19 4SS