About O-Net Communications (Shenzhen) Limited MAC Addresses

MAC addresses beginning with 34:78:77: are manufactured by O-Net Communications (Shenzhen) Limited. When you see a device on your network with this OUI prefix, it indicates that the device was manufactured by O-Net Communications (Shenzhen) Limited.

The IEEE assigns OUI prefixes to manufacturers to ensure uniqueness in the global networking ecosystem. O-Net Communications (Shenzhen) Limited has been assigned the OUI prefix 347877 (among others) for use in their network devices.

Common O-Net Communications (Shenzhen) Limited Devices

Devices manufactured by O-Net Communications (Shenzhen) Limited that you might encounter on networks include:

• Network interface cards (NICs)
• Routers and switches
• Wireless access points
• IoT devices
• Embedded systems
• And other networking equipment

Identifying O-Net Communications (Shenzhen) Limited Devices on Your Network

To identify O-Net Communications (Shenzhen) Limited devices on your network:

1. Use network scanning tools to list devices on your network
2. Look for MAC addresses starting with any of the OUI prefixes listed in the sidebar
3. Use our MAC address lookup tool to confirm the manufacturer

This can be particularly helpful for network inventory, troubleshooting, and security auditing.

MAC Address Format

A complete MAC address consists of 48 bits (6 bytes) and is typically represented in hexadecimal format with each byte separated by a colon or a hyphen. For O-Net Communications (Shenzhen) Limited devices, the MAC address would look like:

34:78:77:XX:XX:XX

The first three bytes (34:78:77) identify the manufacturer as O-Net Communications (Shenzhen) Limited, while the last three bytes are unique to each device.