What this means
The IEEE assigned the MA-L block 7CDD11 to Chongqing MAS SCI&TECH.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 7C:DD:11, it is Chongqing MAS SCI&TECH.Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 7CDD11?
7CDD11 is registered to Chongqing MAS SCI&TECH.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. Chongqing MAS SCI&TECH.Co.,Ltd's block covers 16,777,216 addresses.
What devices use 7CDD11?
Any network device with a MAC address starting 7C:DD:11 was manufactured by or for Chongqing MAS SCI&TECH.Co.,Ltd.