Free Online Random MAC Address Generator

Number of MAC Addresses:

MAC Address Format: Hyphen-separated (00-1A-2B-3C-4D-5E) Colon-separated (00:1A:2B:3C:4D:5E) Dot-separated (001A.2B3C.4D5E) No separator (001A2B3C4D5E)

MAC Address Case: Uppercase Lowercase

Address Type: Any (Universally or Locally Administered) Universally Administered (UAA) Locally Administered (LAA) Multicast Unicast

Generated MAC Addresses

What is a MAC Address?

A MAC (Media Access Control) address is a unique identifier assigned to network interfaces for communications on a network. It's a 48-bit (6-byte) address typically represented as six groups of two hexadecimal digits, separated by hyphens, colons, or dots.

Why Use a Random MAC Address Generator?

Our free online MAC address generator creates valid, random MAC addresses for various purposes:

• Network Testing: Generate test addresses for network configuration and troubleshooting
• Privacy Protection: Create temporary addresses for anonymous networking
• Software Development: Test applications that require MAC address validation
• Virtual Machines: Assign unique addresses to virtual network interfaces
• Educational Purposes: Learn about MAC address formats and structure

Understanding MAC Address Formats

MAC addresses can be represented in several standard formats:

• Hyphen-separated: 00-1A-2B-3C-4D-5E (most common on Windows systems)
• Colon-separated: 00:1A:2B:3C:4D:5E (common on Unix/Linux systems)
• Dot-separated: 001A.2B3C.4D5E (used in Cisco systems)
• No separators: 001A2B3C4D5E (compact representation)

Types of MAC Addresses

Our generator can create different types of MAC addresses:

• Universally Administered Addresses (UAA): Assigned by the IEEE and unique worldwide
• Locally Administered Addresses (LAA): Assigned by network administrators for local use
• Unicast Addresses: Identify a single network interface
• Multicast Addresses: Identify a group of network interfaces

How to Use This MAC Address Generator

Using our tool is simple:

1. Select how many MAC addresses you need (up to 100 at once)
2. Choose your preferred format (hyphens, colons, dots, or no separators)
3. Select uppercase or lowercase letters
4. Specify the address type if needed
5. Click "Generate MAC Addresses"
6. Copy the results to your clipboard with one click

MAC Address Structure Explained

A MAC address consists of six hexadecimal octets (bytes):

• The first three octets identify the manufacturer (OUI - Organizationally Unique Identifier)
• The last three octets are assigned by the manufacturer (NIC - Network Interface Controller specific)
• The second least significant bit of the first octet indicates if the address is universally (0) or locally (1) administered
• The least significant bit of the first octet indicates if the address is unicast (0) or multicast (1)