Who owns MAC prefix 001943?

001943 is registered to Belden in the IEEE MA-L registry.

What devices use 001943?

Any network device with a MAC address starting 00:19:43 was manufactured by or for Belden.

MA-L · OUI prefix

Belden

Any MAC address starting 00:19:43 is registered to Belden in US.

OUI prefix	001943
Vendor	Belden
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:19:43:00:00:00

What this means

The IEEE assigned the MA-L block 001943 to Belden. 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 00:19:43, it is Belden hardware.

Look up another MAC