A MAC (Media Access Control) address is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. MAC addresses are used in the data link layer of the OSI model.
Structure: MAC addresses are 48 bits (6 bytes) typically displayed as six pairs of hexadecimal digits (e.g., 00:1A:2B:3C:4D:5E). The first three bytes identify the manufacturer (OUI - Organizationally Unique Identifier). Uses: MAC addresses are used for network device identification, access control lists, network troubleshooting, and device tracking. OUI lookups can reveal the device manufacturer.Use DomScan's MAC Address Lookup tool to identify device manufacturers and gather network intelligence.