Just In Mobile Information Technologies (Shanghai) Co., Ltd.

Any device whose MAC address begins with 00:19:11 has a network interface built by Just In Mobile Information Technologies (Shanghai) 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

00:19:11

Organization

Just In Mobile Information Technologies (Shanghai) Co., Ltd.

Address

5th Floor, 2nd Area, Haiwangxing Building, 62 Xingguang Ave., N.High-Tech Park Chongqing CN 401121

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.