GuangZhou Post & Telecom Equipment ltd

Any device whose MAC address begins with 00:13:13 has a network interface built by GuangZhou Post & Telecom Equipment 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

00:13:13

Organization

GuangZhou Post & Telecom Equipment ltd

Address

139# Zhongshan Ave Guangzhou Guangdong CN 510630

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.