2014-09-18 | 15:39:16 UTC
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MAC Address Decoder

MAC Address Decoder

This tool identifies the manufacturer given the ethernet media access control address (MAC address) by looking up the first 24 bit of the MAC address in the registration table. The MAC database currently has 13198 entries. Insert one or more MAC addresses per line or copy-paste the output of your arp -a command. To learn more about a specific IP address, try the Check-IP tool.

MAC Address

In computer networking, a Media Access Control address (MAC address) is a unique identifier assigned to a network adapter or network interface cards (NIC) by the manufacturer for identification of the device. A MAC address usually encodes the manufacturer's registered identification number. Thus, given the MAC address of a device one can determine the manufacturer (e.g. Cisco, HP, ..) of the network card. The MAC address may also be known as Ethernet Hardware Address (EHA), hardware address, adapter address, or physical address.

Each computer network interface card is allocated a globally unique 6 byte/48 bit link address when the factory manufactures the card. The first 3 bytes (24 bit) of the MAC address indentify the manufacturer.

How to see my MAC

Use the arp -a command on your Unix, Linux, Mac, or Windows command prompt to list the MAC/IP addresse pairs of all recent connections from/to your computer. You can directly copy the output of arp -a or ipconfig /all into the MAC decoder to easily list the manufacturer assigned to each MAC address found.

Sample Output

>arp -a
Interface: --- 0x4
Internet Address Physical Address Type 00-01-02-0e-b8-d6 dynamic 00-0c-29-e7-67-61 dynamic 00-09-7c-4c-e9-33 dynamic