Practical guides on MAC addresses — what they are, how to read their format and OUI vendor prefixes, how to find or change them on any device, and how to generate clean test data. Pair them with the random MAC generator and the MAC address lookup tool.
Need dummy MAC addresses for tests, seed data, or virtual machines? Learn how to generate valid fake MACs in bulk without colliding with real hardware.
A practical, step-by-step guide to changing your MAC address on Windows, macOS, and Linux — how to set a random value and how to revert it.
The U/L bit splits MAC addresses in two: factory-burned universal and software-assigned local. Learn what the bit means and which to use for testing.
Colon, hyphen, Cisco dot, and plain hex all write the same 48-bit MAC address. Learn what each notation means and how to convert between them.
Learn what a MAC address is, how it works, its format, structure (OUI + NIC), types, and why it matters for networking. Comprehensive guide with examples.
Step-by-step guide to find your MAC address on Windows, macOS, Linux, iPhone, and Android. Includes command-line methods and GUI instructions.
Understand the differences between MAC addresses and IP addresses. Layer 2 vs Layer 3, physical vs logical addressing, and when each is used.
Learn how MAC address randomization works, why it matters for privacy, how it prevents WiFi tracking, and how to enable it on your devices.
Learn about OUI (Organizationally Unique Identifier), how MAC address manufacturer prefixes work, and how to look up any device vendor from its MAC.
Generate valid MAC addresses instantly — bulk generation, multiple formats, vendor prefixes.
Open MAC Generator