Amazon.com, LLC

Any device whose MAC address begins with 5C:41:5A has a network interface built by Amazon.com, LLC. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

5C:41:5A

Organization

Amazon.com, LLC

Address

1200 12th Ave. South, Suite 1200 Seattle US 98144

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.