What this means
The IEEE assigned the MA-L block 001A7C to Hirschmann Multimedia B.V.. 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 00:1A:7C, it is Hirschmann Multimedia B.V. hardware.
Frequently Asked Questions
Who owns MAC prefix 001A7C?
001A7C is registered to Hirschmann Multimedia B.V. 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. Hirschmann Multimedia B.V.'s block covers 16,777,216 addresses.
What devices use 001A7C?
Any network device with a MAC address starting 00:1A:7C was manufactured by or for Hirschmann Multimedia B.V..