What devices use 1840A4?

Any network device with a MAC address starting 18:40:A4 was manufactured by or for Shenzhen Trylong Smart Science and Technology Co., Ltd..

MA-L · OUI prefix

Shenzhen Trylong Smart Science and Technology Co., Ltd.

Q: Who owns MAC prefix 1840A4?

1840A4 is registered to Shenzhen Trylong Smart Science and Technology Co., Ltd. in the IEEE MA-L registry.

Any MAC address starting 18:40:A4 is registered to Shenzhen Trylong Smart Science and Technology Co., Ltd. in CN.

OUI prefix	1840A4
Vendor	Shenzhen Trylong Smart Science and Technology Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	18:40:A4:00:00:00

What this means

The IEEE assigned the MA-L block 1840A4 to Shenzhen Trylong Smart Science and 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 18:40:A4, it is Shenzhen Trylong Smart Science and Technology Co., Ltd. hardware.

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