Bulk MAC Lookup

Paste or upload up to 10,000 MAC addresses. All lookups are client-side — nothing leaves your browser.

Supports .txt, .csv, .log files

Ctrl+Enter to run lookup

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How It Works

Paste a list of MAC addresses in any common format — colon-separated, dash-separated, or raw hex. The tool extracts all valid MACs, deduplicates them, and looks up each one against the IEEE OUI database.

Perfect for: Network audits, inventory management, DHCP log analysis, Wi-Fi access point surveys, and security assessments.

🔒 Your Data Stays Private

Everything — including file uploads — happens entirely in your browser. When you upload a file, it's read locally using the JavaScript FileReader API. No MAC addresses, file contents, or file metadata are ever sent to any server. There is no backend — this is a fully static site.

Read our Privacy Policy for full details.

Supported Formats

  • AA:BB:CC:DD:EE:FF — colon-separated
  • AA-BB-CC-DD-EE-FF — dash-separated
  • AABBCCDDEEFF — raw hex (12 characters)
  • AA:BB:CC — OUI prefix only (6 hex digits minimum)

Mix and match formats freely. One address per line, or separate with commas, spaces, or tabs.