A&T

3 registered MAC prefixes

Frequently asked questions

Which MAC addresses belong to A&T?

A&T has registered 3 address blocks with the IEEE, including 40:04:0C. Its devices use MAC addresses starting with one of these prefixes.

PrefixLengthBlock type
40:04:0C/24MA-L (/24, 16,777,216 addresses)
70:B3:D5:32:E/36MA-S (/36, 4,096 addresses)
8C:1F:64:BC:B/36MA-S (/36, 4,096 addresses)