What this means
The IEEE assigned the MA-M block E44CC74 to Beijing Zhongchuangwei Nanjing Quantum Communication Technology 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 E4:4C:C7:4, it is Beijing Zhongchuangwei Nanjing Quantum Communication Technology Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix E44CC74?
E44CC74 is registered to Beijing Zhongchuangwei Nanjing Quantum Communication Technology 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. Beijing Zhongchuangwei Nanjing Quantum Communication Technology Co., Ltd.'s block covers 1,048,576 addresses.
What devices use E44CC74?
Any network device with a MAC address starting E4:4C:C7:4 was manufactured by or for Beijing Zhongchuangwei Nanjing Quantum Communication Technology Co., Ltd..