Marketaxess Corporation

Any device whose MAC address begins with 48:B2:53 has a network interface built by Marketaxess Corporation. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

48:B2:53

Organization

Marketaxess Corporation

Address

299 Park Avenue New York NY US 10171

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.