Who owns MAC prefix 6433B5B?

6433B5B is registered to electroCore Inc. in the IEEE MA-M registry.

What devices use 6433B5B?

Any network device with a MAC address starting 64:33:B5:B was manufactured by or for electroCore Inc..

MA-M · OUI prefix

electroCore Inc.

Any MAC address starting 64:33:B5:B is registered to electroCore Inc. in US.

OUI prefix	6433B5B
Vendor	electroCore Inc.
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	64:33:B5:B:00:00:00

What this means

The IEEE assigned the MA-M block 6433B5B to electroCore Inc.. 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 64:33:B5:B, it is electroCore Inc. hardware.

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