50:0B:91:B thumbzup UK Limited
Every MAC address from 50:0B:91:B0:00:00 to 50:0B:91:BF:FF:FF belongs to a block the IEEE assigned to thumbzup UK Limited. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 50:0B:91:B belongs to
Written 50:0B:91:B, 50-0B-91-B or 500B91B, depending on the system. Look up a full address.
Prefix
50:0B:91:B/28
Organization
thumbzup UK Limited
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
50:0B:91:B0:00:00
Last address
50:0B:91:BF:FF:FF
Address type
Globally unique, unicast
Registered address
6th Floor, 94 Wigmore Street London GB W1U 3RF
Parent block
Inside 50:0B:91
This MA-M block is carved from the 24-bit block 50:0B:91, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.