TDC A/S

Any device whose MAC address begins with 1C:B2:43 has a network interface built by TDC A/S. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

1C:B2:43

Organization

TDC A/S

Address

Telehøjen 1 Odense SØ DK 5220

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.