CTS System Co., LTD.

Any device whose MAC address begins with 70:48:B5 has a network interface built by CTS System 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

70:48:B5

Organization

CTS System Co., LTD.

Address

345, Bucheon-ro Bucheon-si Kyeonggi-do KR 14521

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.