The address typically includes a manufacturer's organizationally unique identifier (OUI). Many network interfaces, however, support changing their MAC address. Each address can be stored in hardware, such as the card's read-only memory, or by a firmware mechanism. MAC addresses are primarily assigned by device manufacturers, and are therefore often referred to as the burned-in address, or as an Ethernet hardware address, hardware address, or physical address. As typically represented, MAC addresses are recognizable as six groups of two hexadecimal digits, separated by hyphens, colons, or without a separator. Within the Open Systems Interconnection (OSI) network model, MAC addresses are used in the medium access control protocol sublayer of the data link layer. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth. If MAC-address is known, you are able to lookup it that allows you to easily find the company details (company name, address, and country) according to the MAC address of a product.Ī database with Organizationally Unique Identifier (OUI) is usually already present on Linux systems, because various programs use it.Label of a UMTS router with MAC addresses for LAN and WLAN modulesĪ media access control address ( MAC address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This can be contrasted to a programmed address, where the host device issues commands to the NIC to use an arbitrary address ( ). It may also be known as an Ethernet hardware address (EHA), hardware address or physical address (not to be confused with a memory physical address). If assigned by the manufacturer, a MAC address usually encodes the manufacturer's registered identification number and may be referred to as the burned-in address (BIA). MAC addresses are most often assigned by the manufacturer of a network interface controller (NIC) and are stored in its hardware, such as the card's read-only memory or some other firmware mechanism. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and Wi-Fi. A media access control address (MAC address) of a computer is a unique identifier assigned to network interfaces for communications at the data link layer of a network segment.

Ethernet mac address lookup