CPI

Any device whose MAC address begins with EC:7D:9D has a network interface built by CPI. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

EC:7D:9D

Organization

CPI

Address

3222 Phoenixville Pike Suite 200 Malvern PA US 19355

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.