What this means
The IEEE assigned the MA-L block 0018E2 to Topdata Sistemas de Automacao Ltda. 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 00:18:E2, it is Topdata Sistemas de Automacao Ltda hardware.
Frequently Asked Questions
Who owns MAC prefix 0018E2?
0018E2 is registered to Topdata Sistemas de Automacao Ltda 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. Topdata Sistemas de Automacao Ltda's block covers 16,777,216 addresses.
What devices use 0018E2?
Any network device with a MAC address starting 00:18:E2 was manufactured by or for Topdata Sistemas de Automacao Ltda.