NetCare Service Co., Ltd.

Any device whose MAC address begins with 00:1A:5B has a network interface built by NetCare Service 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

00:1A:5B

Organization

NetCare Service Co., Ltd.

Address

5-13-16 Shimizu, Asahi-ku Osaka JP 535-0021

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.