Eastern Communications Company Limited

Any device whose MAC address begins with 00:25:70 has a network interface built by Eastern Communications Company Limited. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:25:70

Organization

Eastern Communications Company Limited

Address

No.398 Wensan Road, Hangzhou Zhejiang CN 310013

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.