IT Telecom Co., Ltd.

Any device whose MAC address begins with A0:42:46 has a network interface built by IT Telecom Co., Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

A0:42:46

Organization

IT Telecom Co., Ltd.

Address

517 TheOvalley 555-9 Hogye-dong, Dong An-gu Anyang-si Gyeonggi-do KR 14117

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.