MAC Address Generator
Generate randomized MAC addresses with customizable separators, letter casing, prefixes, and batch counts.
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This online MAC address generator creates simulated network hardware identifiers for testing, development, and documentation. You can generate between 1 and 50 addresses in a single run. Each address consists of six hexadecimal byte pairs. By default, the generator picks a random three-byte vendor prefix from its built-in list and generates the remaining three bytes at random. You can also supply a custom prefix containing colons to match a specific hardware manufacturer or network segment. The interface allows full formatting control over the generated output. Choose any delimiter to separate byte pairs, including colons, hyphens, spaces, periods, or no delimiter at all. Additionally, you can toggle between lowercase and uppercase hexadecimal characters depending on your configuration files or database requirements. Because generated values rely on randomized byte sequences, running the generator again produces new addresses. These mock addresses help network engineers, software testers, and system administrators build test environments safely.
Instructions
- Set the desired address count between 1 and 50.
- Choose a separator character such as a colon or hyphen, or leave it blank.
- Check the uppercase box if you need capitalized hexadecimal letters.
- Keep the default prefix setting or enter a custom prefix containing colons.
- Run the generator to produce the formatted list of MAC addresses.
Examples
- Generate 3 standard lowercase addresses with colon separators: 00:1a:2b:3c:4d:5e, 00:1a:2b:8f:a1:c2, 00:1a:2b:99:44:10.
- Generate 1 uppercase address with hyphen separators using a custom prefix 00:50:56: 00-50-56-A1-B2-C3.
FAQ
How many MAC addresses can I generate at once?
You can generate between 1 and 50 MAC addresses in a single operation. Values outside this range are constrained to valid limits.
How does custom prefix handling work?
When you enter a prefix containing at least one colon, the tool trims surrounding whitespace, uses your prefix as the base, and appends three randomized hexadecimal octets.
Which separators are supported?
You can enter any character sequence, such as a colon, hyphen, dot, space, or leave the separator blank for continuous hexadecimal strings.
Are these MAC addresses tied to physical hardware?
No. The tool generates mock randomized addresses intended for testing, development, and network simulation.