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Identify the vendor behind a MAC address or OUI prefix, see whether it is a factory or randomized address, look up whole lists, and rewrite MACs into the notation your switch or script expects.
HARDWARE ADDRESSES
Nothing you enter is saved. Vendor lookups are answered from a copy of the IEEE registry on the VPSLake server; format conversion and the IPv6 interface ID are worked out in your browser.
VENDOR RESULT
Source: IEEE Registration Authority (MA-L, MA-M, MA-S, IAB and CID registries), imported 17 Oct 2026. The vendor is whoever bought the block, often the network-chip maker rather than the brand on the box.
HOW TO USE IT
Useful when an unknown address shows up in an ARP table, a DHCP lease list or a switch's MAC table.
Linux: ip link or ip neigh. Windows: getmac /v or Get-NetAdapter. Cisco: show mac address-table. On a VPS, the provider's panel lists the virtual NIC's MAC.
Paste one address into Vendor lookup, or a whole list into Bulk lookup.
The result names the registered company and its block, and tells you whether the address is unicast or multicast and factory-assigned or locally set (often a randomized phone MAC or a VM).
Use Format converter to rewrite a list for a Cisco ACL, a Windows script or a Linux config, then copy or download it.
A MAC address is 48 bits, written as 12 hex digits. The first 24, 28 or 36 bits are a block the IEEE sold to a company (MA-L, MA-M or MA-S); the rest is the serial number that company gave the interface.
Two bits in the first byte carry meaning. The lowest bit marks a multicast group address. The next one, the U/L bit, marks a locally administered address that software chose instead of the factory.
Virtual NICs usually get MACs from their hypervisor's block, which makes the vendor a quick hint about the platform: 00:50:56 and 00:0C:29 are VMware, 00:15:5D is Hyper-V and 08:00:27 is VirtualBox.
QEMU and KVM, which power most Linux VPS platforms, default to 52:54:00. That prefix is locally administered rather than an IEEE block, so the tool labels it as a KVM virtual NIC instead of naming a vendor.
Current Android, iOS, Windows and many Linux distributions use a random "private" MAC per Wi-Fi network so devices cannot be tracked between hotspots. These addresses have the U/L bit set, so the second hex digit is 2, 6, A or E, and they never match a vendor.
If a device keeps changing address on your network, turn off private addressing for that SSID on the device or match it by hostname instead.
Linux, macOS and most network gear print colon-separated lower case. Windows uses upper-case hyphens. Cisco IOS prints three dotted groups of four. They all describe the same 48 bits, so converting is just reformatting. For the IPv6 address a MAC produces with EUI-64, use the MAC to IPv6 converter.
A MAC address identifies the maker of a network interface, not its owner or location, and it never travels past the first router, so websites and remote servers cannot see it. MACs are also easy to change, so do not treat a MAC allow-list as strong access control on its own.
FREQUENTLY ASKED QUESTIONS