What this means
The IEEE assigned the MA-M block D093952 to AT&T. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting D0:93:95:2, it is AT&T hardware.
Frequently Asked Questions
Who owns MAC prefix D093952?
D093952 is registered to AT&T in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. AT&T's block covers 1,048,576 addresses.
What devices use D093952?
Any network device with a MAC address starting D0:93:95:2 was manufactured by or for AT&T.