MAC Address Generator & Vendor Lookup

# What Is a MAC Address Generator & Vendor Lookup?

A MAC address generator creates random MAC (Media Access Control) addresses with customizable parameters, while the vendor lookup feature identifies the manufacturer of a network device based on its MAC address prefix (OUI). MAC addresses are 48-bit hardware identifiers assigned to network interfaces, with the first 24 bits (3 octets) representing the Organizationally Unique Identifier assigned by the IEEE to device manufacturers, and the remaining 24 bits uniquely identifying the interface.

This dual-purpose tool is useful for network testing, device simulation, penetration testing, and debugging. The generator lets you specify address type (unicast/multicast), scope (universal/local), output format (colon/hyphenated/none), and quantity (up to 50 addresses at once). The vendor lookup accepts a MAC prefix and returns the manufacturer name by matching against known OUI registrations. Network engineers, IT administrators, and security researchers use this tool daily for lab setup, network simulation, and device inventory management.

# How to Use This Tool

1. Set generation options — Choose your count (1-50), format (colon, hyphen, or none), address type (any, unicast, or multicast), and scope (any, universal, or local).
2. Click Generate — Press "Generate" to create random MAC addresses based on your configuration.
3. Copy results — Click "Copy All" to copy all generated addresses to your clipboard at once, or select individual addresses.
4. Look up a vendor — Enter a 6-character hex prefix (e.g., 00:1A:11 or 001A11) into the OUI lookup field and click "Lookup" to identify the manufacturer.
5. Try examples — Click the example OUI buttons to quickly look up well-known vendors like Cisco, HP, Intel, and Raspberry Pi.

# Frequently Asked Questions