What this means
The IEEE assigned the MA-M block 18FDCB1 to SOTHIS CIC TEC (Shanghai) 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 18:FD:CB:1, it is SOTHIS CIC TEC (Shanghai) Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 18FDCB1?
18FDCB1 is registered to SOTHIS CIC TEC (Shanghai) Co., Ltd in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. SOTHIS CIC TEC (Shanghai) Co., Ltd's block covers 1,048,576 addresses.
What devices use 18FDCB1?
Any network device with a MAC address starting 18:FD:CB:1 was manufactured by or for SOTHIS CIC TEC (Shanghai) Co., Ltd.