20:B3:7F:1 TDK-Lambda UK
Every MAC address from 20:B3:7F:10:00:00 to 20:B3:7F:1F:FF:FF belongs to a block the IEEE assigned to TDK-Lambda UK. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 20:B3:7F:1 belongs to
Written 20:B3:7F:1, 20-B3-7F-1 or 20B37F1, depending on the system. Look up a full address.
Prefix
20:B3:7F:1/28
Organization
TDK-Lambda UK
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
20:B3:7F:10:00:00
Last address
20:B3:7F:1F:FF:FF
Address type
Globally unique, unicast
Registered address
Kingsley Avenue Ilfracombe Devon GB EX348ES
Parent block
Inside 20:B3:7F
This MA-M block is carved from the 24-bit block 20:B3:7F, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.