What this means
The IEEE assigned the MA-M block DCE533B to Tintel Hongkong 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 DC:E5:33:B, it is Tintel Hongkong Co.Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix DCE533B?
DCE533B is registered to Tintel Hongkong 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. Tintel Hongkong Co.Ltd's block covers 1,048,576 addresses.
What devices use DCE533B?
Any network device with a MAC address starting DC:E5:33:B was manufactured by or for Tintel Hongkong Co.Ltd.