What this means
The IEEE assigned the MA-L block 34B5A3 to CIG SHANGHAI CO LTD. 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 34:B5:A3, it is CIG SHANGHAI CO LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 34B5A3?
34B5A3 is registered to CIG SHANGHAI CO LTD 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. CIG SHANGHAI CO LTD's block covers 16,777,216 addresses.
What devices use 34B5A3?
Any network device with a MAC address starting 34:B5:A3 was manufactured by or for CIG SHANGHAI CO LTD.