What this means
The IEEE assigned the MA-L block 000CA3 to Rancho Technology, Inc.. 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 00:0C:A3, it is Rancho Technology, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 000CA3?
000CA3 is registered to Rancho Technology, Inc. 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. Rancho Technology, Inc.'s block covers 16,777,216 addresses.
What devices use 000CA3?
Any network device with a MAC address starting 00:0C:A3 was manufactured by or for Rancho Technology, Inc..