What this means
The IEEE assigned the MA-L block A4B818 to PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH. 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 A4:B8:18, it is PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH hardware.
Frequently Asked Questions
Who owns MAC prefix A4B818?
A4B818 is registered to PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH's block covers 16,777,216 addresses.
What devices use A4B818?
Any network device with a MAC address starting A4:B8:18 was manufactured by or for PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH.