About MAC Address Lookup

maclookup.switchfirewall.com

maclookup.switchfirewall.com is a free, fast and reliable MAC address and OUI vendor lookup tool. It allows anyone to instantly identify the manufacturer of a network device by entering its MAC address. The tool searches the official IEEE OUI registry — the global standard for MAC address assignments — and returns the matching vendor name, block type and registered address.

This service is part of SwitchFirewall — a platform focused on networking, cybersecurity and IT infrastructure tools. Our goal is to provide practical, no-frills tools for network engineers, security professionals, students and IT enthusiasts worldwide.

What We Offer

  • Free MAC address and OUI vendor lookup — no registration required
  • Support for all MAC address formats: colon, hyphen, Cisco dot, plain hex
  • Coverage of all IEEE block types: MA-L, MA-M, MA-S, CID and IAB
  • Vendor name search — find all MAC prefixes for any company
  • Daily database updates from the official IEEE Standards OUI Registry
  • Copy and CSV download for search results

Data Source

All vendor data is sourced exclusively from the IEEE Standards OUI Registry. The IEEE (Institute of Electrical and Electronics Engineers) maintains the authoritative global database of MAC address assignments. We do not generate or modify this data — we download, normalise and index it daily to ensure our tool always reflects the latest registrations.