10:07:23:4 Audio Engineering Ltd.
Every MAC address from 10:07:23:40:00:00 to 10:07:23:4F:FF:FF belongs to a block the IEEE assigned to Audio Engineering Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 10:07:23:4 belongs to
Written 10:07:23:4, 10-07-23-4 or 1007234, depending on the system. Look up a full address.
Prefix
10:07:23:4/28
Organization
Audio Engineering Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
10:07:23:40:00:00
Last address
10:07:23:4F:FF:FF
Address type
Globally unique, unicast
Registered address
75 Parnell Rise Auckland NZ 1052
Parent block
Inside 10:07:23
This MA-M block is carved from the 24-bit block 10:07:23, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.