90:F4:21:1 BeEnergy SG GmbH
Every MAC address from 90:F4:21:10:00:00 to 90:F4:21:1F:FF:FF belongs to a block the IEEE assigned to BeEnergy SG GmbH. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 90:F4:21:1 belongs to
Written 90:F4:21:1, 90-F4-21-1 or 90F4211, depending on the system. Look up a full address.
Prefix
90:F4:21:1/28
Organization
BeEnergy SG GmbH
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
90:F4:21:10:00:00
Last address
90:F4:21:1F:FF:FF
Address type
Globally unique, unicast
Registered address
Weissenburgring 23 Pohlheim DE 35415
Parent block
Inside 90:F4:21
This MA-M block is carved from the 24-bit block 90:F4:21, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.