B4:51:F9 NB Software
Every MAC address from B4:51:F9:00:00:00 to B4:51:F9:FF:FF:FF belongs to a block the IEEE assigned to NB Software. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B4:51:F9 belongs to
Written B4:51:F9, B4-51-F9 or B451F9, depending on the system. Look up a full address.
Prefix
B4:51:F9
Organization
NB Software
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
B4:51:F9:00:00:00
Last address
B4:51:F9:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Eichhalde 3 Weissach i. T. Baden-Württemberg DE 71554