ELECTRONIC RETAILING SYSTEMS INTERNATIONAL

Any device whose MAC address begins with 00:A0:E9 has a network interface built by ELECTRONIC RETAILING SYSTEMS INTERNATIONAL. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:A0:E9

Organization

ELECTRONIC RETAILING SYSTEMS INTERNATIONAL

Address

372 DANBURY ROAD WILTON CT US 06897-2523

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.