MAC Address Lookup – Identify Device Manufacturer Instantly

A MAC address (Media Access Control Address) is a globally unique hardware identifier assigned to every network interface controller. When you use a MAC address lookup tool, you can identify the device manufacturer or verify hardware authenticity. A MAC address is a 48-bit identifier, commonly displayed as 12 hexadecimal characters, like 00-1A-2B-3C-4D-5E. Knowing what a MAC address is helps you understand network communication better.

The first 24 bits (6 characters) form the OUI (Organizationally Unique Identifier), assigned by IEEE to manufacturers, which is the core basis for any MAC address lookup. For example, in 00-0C-39-AB-CD-EF, the segment 00-0C-39 is an OUI prefix pointing to Cisco Systems. The remaining 24 bits uniquely identify the specific device from that vendor.

Method 1 (GUI): Open "Settings" → "Network & Internet" → "Advanced Network Settings" → "Hardware and Connection Properties". Locate your active network adapter and find "Physical Address", which is your MAC address.

Method 2 (CMD): Press Win + R, type cmd, and press Enter. Type ipconfig /all and look for "Physical Address" under your Ethernet or Wi-Fi adapter. This is the standard way to get mac address cmd information for lookup.

How to modify MAC address: In Device Manager, find your network adapter, go to "Properties" → "Advanced" → "Network Address", enter a new 12-digit hex MAC address, and restart the adapter. Note this change is temporary at the software level.

Method 1 (GUI): Click the Apple icon → "System Settings" → "Network" → Select your active connection (Wi-Fi or Ethernet) → "Details" → "Hardware". You will see the MAC address listed, ready for vendor lookup.

Method 2 (Terminal): Open Terminal, type ifconfig, and look for en0 (usually Wi-Fi). The string after ether is your MAC address.

On modern macOS systems with Apple Silicon, you might also check the "Rotate Wi-Fi Address" privacy setting, which generates random mac address values for security. Make sure to capture the hardware address for an accurate MAC address identifier.

Open Terminal and use ifconfig or ip link show to display network interfaces. The link/ether field reveals the MAC address for interfaces like eth0 or wlan0. These methods help you find mac address on any Linux distribution.

To modify the address, use sudo ifconfig eth0 down followed by sudo ifconfig eth0 hw ether 00:11:22:33:44:55 and sudo ifconfig eth0 up. This is useful for network testing and mac address spoofing scenarios.

Network Security: Administrators use mac address filtering to control network access based on device MAC addresses.

Device Identification: Using a mac address vendor lookup, you can detect unauthorized devices or identify IoT endpoints.

Troubleshooting: When inspecting packets in Wireshark, the wireshark oui lookup feature identifies devices participating in traffic, especially using the mac address table.

Asset Management: Organizations scan their networks with a mac address finder to discover and catalog vendor devices automatically.

DHCP Configuration: Static IP assignments rely on the MAC address, often verified through an OUI lookup.

Our free MAC address lookup tool instantly identifies the manufacturer behind any MAC address. Simply enter the full MAC (e.g., 00-01-82-12-34-56) or just the OUI prefix (e.g., 000182). The tool supports various mac address format styles including hyphens, colons, and continuous strings.

Click the "Lookup MAC Address" button or press Enter. Our oui finder engine extracts the first 24 bits and matches them against the IEEE registration database to display vendor name, factory address, and region code. You can also copy the results to your clipboard for network documentation or security audits.