Who owns MAC prefix D45251?

D45251 is registered to IBT Ingenieurbureau Broennimann Thun in the IEEE MA-L registry.

What devices use D45251?

Any network device with a MAC address starting D4:52:51 was manufactured by or for IBT Ingenieurbureau Broennimann Thun.

MA-L · OUI prefix

IBT Ingenieurbureau Broennimann Thun

Any MAC address starting D4:52:51 is registered to IBT Ingenieurbureau Broennimann Thun in CH.

OUI prefix	D45251
Vendor	IBT Ingenieurbureau Broennimann Thun
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	D4:52:51:00:00:00

What this means

The IEEE assigned the MA-L block D45251 to IBT Ingenieurbureau Broennimann Thun. 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 D4:52:51, it is IBT Ingenieurbureau Broennimann Thun hardware.

Look up another MAC