What this means
The IEEE assigned the MA-L block 502B98 to Es-tech International. 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 50:2B:98, it is Es-tech International hardware.
Frequently Asked Questions
Who owns MAC prefix 502B98?
502B98 is registered to Es-tech International 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. Es-tech International's block covers 16,777,216 addresses.
What devices use 502B98?
Any network device with a MAC address starting 50:2B:98 was manufactured by or for Es-tech International.