What this means
The IEEE assigned the MA-L block 0013A3 to Siemens Home & Office Comm. Devices. 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 00:13:A3, it is Siemens Home & Office Comm. Devices hardware.
Frequently Asked Questions
Who owns MAC prefix 0013A3?
0013A3 is registered to Siemens Home & Office Comm. Devices 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. Siemens Home & Office Comm. Devices's block covers 16,777,216 addresses.
What devices use 0013A3?
Any network device with a MAC address starting 00:13:A3 was manufactured by or for Siemens Home & Office Comm. Devices.