Who owns MAC prefix 18421D?

18421D is registered to Private in the IEEE MA-L registry.

What devices use 18421D?

Any network device with a MAC address starting 18:42:1D was manufactured by or for Private.

MA-L · OUI prefix

Private

Any MAC address starting 18:42:1D is registered to Private.

OUI prefix	18421D
Vendor	Private
Registry	MA-L (24-bit, large block)
Example MAC	18:42:1D:00:00:00

What this means

The IEEE assigned the MA-L block 18421D to Private. 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 18:42:1D, it is Private hardware.

Other Private prefixes

Private holds 213 registered blocks in total.

000B18 000BF4 000C53 000D58 000DA7 000DC2 000DF2 000E17 000E22 000101 000578 000EEF all 213 »

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