Who owns MAC prefix 0004B7?

0004B7 is registered to AMB i.t. Holding in the IEEE MA-L registry.

What devices use 0004B7?

Any network device with a MAC address starting 00:04:B7 was manufactured by or for AMB i.t. Holding.

MA-L · OUI prefix

AMB i.t. Holding

Any MAC address starting 00:04:B7 is registered to AMB i.t. Holding in NL.

OUI prefix	0004B7
Vendor	AMB i.t. Holding
Registry	MA-L (24-bit, large block)
Country	NL
Example MAC	00:04:B7:00:00:00

What this means

The IEEE assigned the MA-L block 0004B7 to AMB i.t. Holding. 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 00:04:B7, it is AMB i.t. Holding hardware.

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