What this means
The IEEE assigned the MA-M block 300A603 to Intergard do Brasil Ind e Com de Eletr e Mec Ltda. 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 30:0A:60:3, it is Intergard do Brasil Ind e Com de Eletr e Mec Ltda hardware.
Frequently Asked Questions
Who owns MAC prefix 300A603?
300A603 is registered to Intergard do Brasil Ind e Com de Eletr e Mec Ltda in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Intergard do Brasil Ind e Com de Eletr e Mec Ltda's block covers 1,048,576 addresses.
What devices use 300A603?
Any network device with a MAC address starting 30:0A:60:3 was manufactured by or for Intergard do Brasil Ind e Com de Eletr e Mec Ltda.