Free Random MAC Address Generator – Generate Valid MAC Addresses

Generate random MAC addresses for network testing, software development, and virtualization. Choose from real vendor prefixes (Apple, Intel, Cisco, Samsung), multiple formats, and bulk generation. 100% free, browser-based, privacy-respecting.

What Is a MAC Address?

A MAC (Media Access Control) address is a unique hardware identifier assigned to network interface controllers (NICs). It consists of six groups of two hexadecimal digits, forming a 48-bit address used for network communication at the data link layer.

MAC Address Structure

AA:BB:CC:DD:EE:FF
└─────┘ └────────┘
  OUI     NIC Specific

OUI (Organizationally Unique Identifier): The first three octets (24 bits) identify the hardware manufacturer. IEEE assigns these prefixes to vendors.

NIC-Specific: The last three octets (24 bits) are assigned by the manufacturer to uniquely identify each device.

Why Generate Random MAC Addresses?

Network Testing: Test network configurations, firewall rules, and DHCP servers without real hardware.

Software Development: Create mock network data for applications that work with MAC addresses.

Privacy Protection: Some systems use MAC address randomization to prevent tracking.

Virtualization: Virtual machines need unique MAC addresses to avoid conflicts.

Security Research: Test network security tools and intrusion detection systems.

How to Use This Tool

Step 1: Choose Options

• Vendor: Select a manufacturer or use fully random
• Format: Choose separator style
• Count: Set how many to generate
• Unicast: Enable for valid device addresses

Step 2: Generate

Click the button to create MAC addresses instantly.

Step 3: Copy or Download

Copy individual addresses or download the full list.

Format Options Explained

Vendor Prefixes Included

Apple

OUI prefixes: 00:03:93, 00:0A:95, 00:11:24, 00:17:F2, and more.

Intel

OUI prefixes: 00:02:B3, 00:03:47, 00:07:E9, 00:13:E8, and more.

Samsung

OUI prefixes: 00:00:F0, 00:07:AB, 00:12:FB, 00:17:D5, and more.

Cisco

OUI prefixes: 00:00:0C, 00:01:42, 00:02:16, 00:02:FC, and more.

Dell

OUI prefixes: 00:06:5B, 00:0B:DB, 00:11:43, 00:14:22, and more.

HP

OUI prefixes: 00:01:E6, 00:04:EA, 00:08:02, 00:0F:20, and more.

Technical Details

Unicast vs Multicast

Unicast (recommended):

• LSB of first octet is 0
• Addresses a single device
• Example: 00:1A:2B:3C:4D:5E

Multicast:

• LSB of first octet is 1
• Addresses multiple devices
• Example: 01:1A:2B:3C:4D:5E

Locally Administered vs Universal

Universal (UAA):

• Assigned by manufacturer
• Second LSB of first octet is 0

Locally Administered (LAA):

• Set by network admin
• Second LSB of first octet is 1

Use Cases

Virtual Machine Configuration

VM Network Settings:
  MAC Address: 00:11:43:8A:B2:C4
  (Generated with Dell prefix)

Testing DHCP Servers

Generate multiple addresses to simulate many devices requesting leases.

Network Monitoring Tools

Create test data for network analysis software.

Database Seeding

Populate dev databases with realistic MAC addresses.

Frequently Asked Questions

Are these valid MAC addresses?

Yes, they follow the IEEE MAC address format. Using vendor prefixes ensures they look like real device addresses.

Will these conflict with real devices?

The 6 random bytes provide 256^6 (over 281 trillion) combinations, making collisions extremely unlikely in testing.

What's the difference between formats?

Only visual. All formats represent the same 48-bit value. Choose based on your system's convention.

Should I enable unicast?

Yes for most cases. Unicast addresses identify single devices. Multicast addresses (rare) target groups.

Can I use these for MAC spoofing?

This tool is for legitimate testing and development. Spoofing MAC addresses may violate terms of service or laws.

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Configure options above and click Generate to create MAC addresses instantly.