A4:11:63:A ISE GmbH
Every MAC address from A4:11:63:A0:00:00 to A4:11:63:AF:FF:FF belongs to a block the IEEE assigned to ISE GmbH. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who A4:11:63:A belongs to
Written A4:11:63:A, A4-11-63-A or A41163A, depending on the system. Look up a full address.
Prefix
A4:11:63:A/28
Organization
ISE GmbH
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
A4:11:63:A0:00:00
Last address
A4:11:63:AF:FF:FF
Address type
Globally unique, unicast
Registered address
Osterstrasse 15 Oldenburg DE 26122
Parent block
Inside A4:11:63
This MA-M block is carved from the 24-bit block A4:11:63, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.