Who owns MAC prefix B44D435?

B44D435 is registered to halstrup-walcher GmbH in the IEEE MA-M registry.

What devices use B44D435?

Any network device with a MAC address starting B4:4D:43:5 was manufactured by or for halstrup-walcher GmbH.

MA-M · OUI prefix

halstrup-walcher GmbH

Any MAC address starting B4:4D:43:5 is registered to halstrup-walcher GmbH in DE.

OUI prefix	B44D435
Vendor	halstrup-walcher GmbH
Registry	MA-M (28-bit, medium block)
Country	DE
Example MAC	B4:4D:43:5:00:00:00

What this means

The IEEE assigned the MA-M block B44D435 to halstrup-walcher GmbH. 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 B4:4D:43:5, it is halstrup-walcher GmbH hardware.

Other halstrup-walcher GmbH prefixes

halstrup-walcher GmbH holds 2 registered blocks in total.

200A0D0

Look up another MAC