Who owns MAC prefix 24D921?

24D921 is registered to Avaya Inc in the IEEE MA-L registry.

What devices use 24D921?

Any network device with a MAC address starting 24:D9:21 was manufactured by or for Avaya Inc.

MA-L · OUI prefix

Avaya Inc

Any MAC address starting 24:D9:21 is registered to Avaya Inc in US.

OUI prefix	24D921
Vendor	Avaya Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	24:D9:21:00:00:00

What this means

The IEEE assigned the MA-L block 24D921 to Avaya 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 24:D9:21, it is Avaya Inc hardware.

Other Avaya Inc prefixes

Avaya Inc holds 52 registered blocks in total.

00040D 001B4F 00549F 048A15 10CDAE 14612F 24B209 2CF4C5 3475C7 38BB3C 3C3A73 3CB15B all 52 »

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