Beijing Royaltech Co.,Ltd

Any device whose MAC address begins with 64:57:E5 has a network interface built by Beijing Royaltech 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

64:57:E5

Organization

Beijing Royaltech Co.,Ltd

Address

201, building 7, Boya CC4 courtyard, Life Science Park, Beiqing Road, Changping District, Beijing Beijing CN 100000

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.