Piper Networks, Inc.

Any device whose MAC address begins with C4:E5:06 has a network interface built by Piper Networks, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:E5:06

Organization

Piper Networks, Inc.

Address

3636 Nobel Drive San Diego CA US 92122

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.