Hangzhou CCRFID Microelectronic Co., Ltd. - MAC Prefix 1845B3B (MA-M)

What this means

The IEEE assigned the MA-M block 1845B3B to Hangzhou CCRFID Microelectronic 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 18:45:B3:B, it is Hangzhou CCRFID Microelectronic Co., Ltd. hardware.

Frequently Asked Questions

Who owns MAC prefix 1845B3B?

1845B3B is registered to Hangzhou CCRFID Microelectronic 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. Hangzhou CCRFID Microelectronic Co., Ltd.'s block covers 1,048,576 addresses.

What devices use 1845B3B?

Any network device with a MAC address starting 18:45:B3:B was manufactured by or for Hangzhou CCRFID Microelectronic Co., Ltd..

OUI prefix	1845B3B
Vendor	Hangzhou CCRFID Microelectronic Co., Ltd.
Registry	MA-M (28-bit, medium block)
Block size	1,048,576 addresses
Country	CN
Other blocks by this vendor	1 total
Example MAC	18:45:B3:B:00:00:00