FAQ
What is MAC Address OUI Lookup?
MAC address lookup uses the first 24 bits (OUI - Organizationally Unique Identifier) to identify the device manufacturer. Every network device has a full MAC address, and the first 6 hexadecimal characters identify the vendor. This tool can quickly look up device information.
What MAC address formats are supported?
This tool supports multiple common MAC formats: colon-separated (00:11:22:AA:BB:CC), dash-separated (00-11-22-AA-BB-CC), dot-separated (0011.22AA.BBCC), and no-separator format (001122AABBCC). Case does not matter.
Is the OUI database complete?
This tool includes thousands of IEEE registered OUI entries covering major manufacturers (Apple, Intel, Cisco, Samsung, Huawei, Dell, HP, NVIDIA, etc.). The lookup is complete and runs locally in your browser. For newly registered or small vendors, the result will show "Not Found".
What are practical uses of MAC lookup?
MAC address lookup is useful in many scenarios: 1) Network management — identify devices connected to your network; 2) Security auditing — check for unauthorized devices; 3) Asset tracking — confirm device ownership; 4) Physical network troubleshooting — locate devices.
Can I batch lookup MAC addresses?
Yes. This tool supports batch lookup. Enter one MAC address per line in the input field (up to 100), click Lookup, and each MAC will be checked for vendor info. Results can be copied.