City-Net Technology, Inc.

Any device whose MAC address begins with 00:30:BE has a network interface built by City-Net Technology, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:30:BE

Organization

City-Net Technology, Inc.

Address

135 E. Chesnut Ave., Ste. Monrovia CA US 91016

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.