What this means
The IEEE assigned the MA-L block 001A1C to GT&T Engineering Pte 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 00:1A:1C, it is GT&T Engineering Pte Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 001A1C?
001A1C is registered to GT&T Engineering Pte 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. GT&T Engineering Pte Ltd's block covers 16,777,216 addresses.
What devices use 001A1C?
Any network device with a MAC address starting 00:1A:1C was manufactured by or for GT&T Engineering Pte Ltd.