What this means
The IEEE assigned the MA-L block 00019D to E-Control Systems, 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 00:01:9D, it is E-Control Systems, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00019D?
00019D is registered to E-Control Systems, 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. E-Control Systems, Inc.'s block covers 16,777,216 addresses.
What devices use 00019D?
Any network device with a MAC address starting 00:01:9D was manufactured by or for E-Control Systems, Inc..