Who owns MAC prefix 0040FF?

0040FF is registered to TELEBIT CORPORATION in the IEEE MA-L registry.

What devices use 0040FF?

Any network device with a MAC address starting 00:40:FF was manufactured by or for TELEBIT CORPORATION.

MA-L · OUI prefix

TELEBIT CORPORATION

Any MAC address starting 00:40:FF is registered to TELEBIT CORPORATION in US.

OUI prefix	0040FF
Vendor	TELEBIT CORPORATION
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:40:FF:00:00:00

What this means

The IEEE assigned the MA-L block 0040FF to TELEBIT CORPORATION. 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 00:40:FF, it is TELEBIT CORPORATION hardware.

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