What devices use 001F21?

Any network device with a MAC address starting 00:1F:21 was manufactured by or for Inner Mongolia Yin An Science & Technology Development Co.,L.

MA-L · OUI prefix

Inner Mongolia Yin An Science & Technology Development Co.,L

Q: Who owns MAC prefix 001F21?

001F21 is registered to Inner Mongolia Yin An Science & Technology Development Co.,L in the IEEE MA-L registry.

Any MAC address starting 00:1F:21 is registered to Inner Mongolia Yin An Science & Technology Development Co.,L in CN.

OUI prefix	001F21
Vendor	Inner Mongolia Yin An Science & Technology Development Co.,L
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	00:1F:21:00:00:00

What this means

The IEEE assigned the MA-L block 001F21 to Inner Mongolia Yin An Science & Technology Development Co.,L. 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 00:1F:21, it is Inner Mongolia Yin An Science & Technology Development Co.,L hardware.

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