MAC Vendor Lookup

MAC Vendor Examples

The first 3 or more bytes of the MAC address is assigned to a manufacturer, and the manufacturer arbitarily assigns additional bytes to uniquely assign NIC cards. Here is a few examples of MAC prefixes assigned to vendors.

What is a MAC Address and how is it assigned?

MAC address (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. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth.

A MAC address consists of a sequence of six pairs of hexadecimal digits separated by colons, such as "00:06:5B:11:22:33". This format is standardized by the Institute of Electrical and Electronics Engineers (IEEE).

The MAC address is used by the network protocol to identify a unique device on the network. It serves as the hardware address of the device and is used by the data link layer of the OSI Model. The MAC address is used to specify a destination in a network frame and to ensure that the data is sent to the correct device.

MAC addresses are assigned to vendors by the IEEE. The IEEE assigns MAC addresses from a unique block of addresses to vendors, who then include the MAC address in the firmware of each network interface controller (NIC) they produce. The MAC address is unique to each NIC, so each device that connects to a network has its own unique MAC address.

The assignment of MAC addresses to vendors is managed by the IEEE's Registration Authority, which is responsible for allocating blocks of MAC addresses to vendors and ensuring that the assignment process is managed fairly and efficiently.

The assignment of MAC addresses to vendors is based on a hierarchical structure, with the most significant bits of the MAC address identifying the vendor and the remaining bits specifying the specific device. This structure ensures that MAC addresses are globally unique and allows network administrators to determine the manufacturer of a device based on its MAC address.

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How to use MAC Vendor Lookup

Use MAC Vendor Lookup when you need a fast, browser-friendly way to look up online information. Enter the required value, review any validation hints, and run the tool to get a clear result that can be copied, downloaded, or used in your next workflow.

This IP Tools utility is designed for repeatable checks and everyday troubleshooting. For best results, use complete and accurate input, review the output carefully, and combine the result with related tools when you need a broader diagnosis.

When this tool is useful

• Checking a value before publishing, deploying, or sharing it.
• Saving time on routine ip tools tasks.
• Comparing results with related IPLocation.net tools for a more complete review.
• Documenting a result for technical support, SEO work, security review, or development notes.

MAC Vendor Lookup tips

Keep a copy of the original input when comparing results, especially for DNS, web, image, PDF, text, and code tools. If a result depends on live network data, remember that DNS records, HTTP headers, certificates, rankings, and third-party responses can change over time.

Use this MAC Vendor Lookup to identify the organization associated with the OUI, or first three bytes, of a MAC address. The result is useful when inventorying network devices, reviewing DHCP logs, troubleshooting Wi-Fi clients, or identifying unknown Ethernet hardware.

Vendor lookup is based on registered address prefixes. It cannot uniquely identify a person, physical location, or exact device model, and locally administered or randomized MAC addresses may not map to the original manufacturer.