Who owns MAC prefix A40E2B?

A40E2B is registered to Facebook Inc in the IEEE MA-L registry.

What devices use A40E2B?

Any network device with a MAC address starting A4:0E:2B was manufactured by or for Facebook Inc.

MA-L · OUI prefix

Facebook Inc

Any MAC address starting A4:0E:2B is registered to Facebook Inc in US.

OUI prefix	A40E2B
Vendor	Facebook Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	A4:0E:2B:00:00:00

What this means

The IEEE assigned the MA-L block A40E2B to Facebook Inc. 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 A4:0E:2B, it is Facebook Inc hardware.

Other Facebook Inc prefixes

Facebook Inc holds 2 registered blocks in total.

4857DD

Look up another MAC