MAC address generator

What is a MAC address?

A MAC (Media Access Control) address is a unique hardware identifier assigned to every network interface controller (NIC). It is a 48-bit (6-byte) address typically written as six groups of two hexadecimal digits separated by colons or hyphens — for example 00:1A:2B:3C:4D:5E.

What is an OUI prefix?

The first three bytes (24 bits) of a MAC address are the OUI — Organizationally Unique Identifier. This prefix identifies the manufacturer of the network interface. The IEEE assigns OUI prefixes to manufacturers. This generator uses real OUI prefixes from Apple, Intel, Cisco, Raspberry Pi, Samsung, and VMware to create realistic addresses.

Common uses for generated MAC addresses

• Network simulation and topology testing in virtual environments
• Testing network device management software (MDM, NAC systems)
• Populating test databases for network inventory applications
• Testing MAC-based authentication and filtering logic
• Generating test data for network monitoring dashboards

API access

Use GET /api/v1/network/mac?separator=-&count=20 to generate MAC addresses via the REST API.