Random MAC Address Generator
Generate valid MAC addresses for network testing and development — choose your separator format and quantity.
How to Use the MAC Address Generator
Create valid MAC addresses for network testing in seconds.
- Choose separator between colon (:), hyphen (-), or no separator.
- Select case for the hexadecimal characters (uppercase or lowercase).
- Set quantity from 1 to 100 MAC addresses to generate.
- Click Generate to create random MAC addresses.
- Copy the results for use in your network testing, virtualization, or development.
What is a MAC Address?
A Media Access Control (MAC) address is a unique hardware identifier assigned to network interface controllers (NICs) for communications on a network segment. MAC addresses are 48-bit identifiers typically displayed as six groups of two hexadecimal digits.
The first three octets (24 bits) represent the Organizationally Unique Identifier (OUI), which identifies the manufacturer of the network hardware. The last three octets (24 bits) are assigned by the manufacturer and should be unique to each device.
MAC addresses operate at the Data Link Layer (Layer 2) of the OSI model and are used for local network communication, device identification, and network access control.
MAC Address Formats
| Format | Example | Common Usage |
|---|---|---|
| Colon notation | 01:23:45:67:89:AB | Linux, Unix, Cisco IOS |
| Hyphen notation | 01-23-45-67-89-AB | Windows, Microsoft products |
| No separator | 0123456789AB | Programming, databases |
| Dotted quad | 0123.4567.89AB | Cisco networking equipment |
Common Use Cases
Virtual Machine Testing: Assign unique MAC addresses to virtual machines in VMware, VirtualBox, or other hypervisors.
Network Simulation: Create test network topologies with multiple virtual devices, each requiring a unique MAC address.
Development & Testing: Test network applications, MAC filtering rules, and device authentication without real hardware.
Database Population: Generate test data for network inventory databases and asset management systems.
Security Testing: Test MAC-based access control lists (ACLs) and network security policies.
Important: Test Data Only
These MAC addresses are randomly generated for testing purposes. While they follow valid MAC address format, they are not registered to any specific manufacturer. Do not use these addresses to spoof real network devices or engage in unauthorized network access.
For production environments, always use MAC addresses assigned by the hardware manufacturer or properly configured virtual MAC addresses following your organization's policies.