MAC Address Generator Tool
MAC Address Generator
Generate valid MAC addresses for testing, development, networking, and virtualization. MAC addresses are unique identifiers assigned to network interfaces.
Generate MAC Addresses
Generated Addresses
Click "Generate MAC Addresses" to get started
MAC Address Validator
Validate a MAC address to check if it's in the correct format.
About MAC Addresses
What is a MAC Address?
A MAC (Media Access Control) address is a unique identifier assigned to network interfaces for communications on the physical network segment. It's a 48-bit address (6 bytes) typically represented as six groups of two hexadecimal digits separated by colons or hyphens.
MAC Address Structure
Format: XX:XX:XX:XX:XX:XX (12 hex digits)
First 3 bytes (24 bits): OUI (Organizationally Unique Identifier) - identifies the manufacturer
Last 3 bytes (24 bits): NIC specific - assigned by the manufacturer
Common OUI Prefixes
| Vendor | OUI Prefix | Example MAC |
|---|---|---|
| Apple | 00:1E:52 | 00:1E:52:XX:XX:XX |
| Cisco | 00:1B:0D | 00:1B:0D:XX:XX:XX |
| Dell | 00:1E:4F | 00:1E:4F:XX:XX:XX |
| Intel | 00:1B:21 | 00:1B:21:XX:XX:XX |
| Microsoft | 00:0D:3A | 00:0D:3A:XX:XX:XX |
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