What is a MAC (Media Access Control) Address?

Every device that connects to a network, your PC, laptop, phone, smart TV, game console, or router, has more than one identity: a MAC address and an IP address.

• The MAC address identifies a device on a local network.
• The IP address identifies the connection on a wider network (like the internet).

In this article, we focus on what a MAC address is and how it is used in real networks. In addition, you will also learn the difference between MAC and IP addresses and how to find/check your MAC address in Windows 11, Windows 10, and other devices.

What is a MAC Address?

Netgear describes A MAC address (Media Access Control address), also known as a physical address, is a unique hardware identifier assigned to a network interface card (NIC), for example, the Wi‑Fi or Ethernet adapter in your computer.

Think of a MAC address as a serial number burned into the network chip:

• It is used to identify your device on a local network (LAN).
• Switches, routers, and access points use MAC addresses to deliver data to the correct device.
• It normally does not change, unless you deliberately spoof or override it.

MAC address format (with examples)

MAC addresses are usually shown as 12 hexadecimal characters, grouped in pairs. For example:

• 00-1A-2B-3C-4D-5E
• 00:1A:2B:3C:4D:5E
• 001A.2B3C.4D5E (Cisco style)

Each pair represents 8 bits (one byte). In total, a MAC address is 48 bits (6 bytes).

The values go from 00-00-00-00-00-00 up to FF-FF-FF-FF-FF-FF.

• The first half (first 3 bytes) is usually the manufacturer ID (called OUI – Organizationally Unique Identifier).
• The second half (last 3 bytes) is the device‑specific identifier.

This combination is designed to make each network interface globally unique.

How is a MAC Address Used?

On a typical home or office network, MAC addresses are used mainly by:

• Network switches and Wi‑Fi access points – to send data frames to the right device.
• Routers – to know which local device requested which data.
• DHCP servers – to give IP addresses to specific MAC addresses.

When your device sends data on the network:

1. It wraps the data in a frame that includes:
   • The source MAC address (your device)
   • The destination MAC address (router, switch or another device)
2. Switches and routers read those MAC addresses and forward the data to the correct port.

MAC addresses operate mostly at Layer 2 (Data Link Layer) of the OSI model, while IP addresses work at Layer 3 (Network Layer).

Because a MAC address is tied to the physical network interface, it usually:

• Stays the same even when you move networks.
• Changes only if you replace the network card or spoof it in software.

MAC Address vs IP Address: What’s the Difference?

People often confuse MAC addresses and IP addresses. They work together, but they are not the same.

MAC Address

• Identifies a device’s network interface.
• Used on the local network (LAN).
• Fixed at the hardware level (though it can be changed/spoofed in software).
• Example: 00:1A:2B:3C:4D:5E.

IP Address

• Identifies a connection on a network (local or internet).
• Can be public (internet‑facing) or private (local network).
• Assigned by your router or ISP, it can be dynamic or static.
• Example IPv4: 192.168.1.10 (private), 203.0.113.25 (public).
• Example IPv6: 2001:0db8:85a3:0000:0000:8a2e:0370:7334.

In short:

• MAC = the device’s address on the local network.
• IP = where the device is in the network, so data can be routed to it.

How to Find the MAC Address on Windows 11 and 10

You can find your MAC address in Windows using either Command Prompt or the Settings / Control Panel interface.

Method 1: Find MAC address using Command Prompt

This method works in both Windows 11 and Windows 10.

1. Press Windows key + S, type cmd.
2. Right‑click Command Prompt and choose Run as administrator.
3. In the Command Prompt window, type: ipconfig /all and press Enter.
4. You’ll see a list of network adapters. Scroll down to your active adapter (for example, Wi‑Fi or Ethernet).
5. Look for the line called Physical Address.

The value next to Physical Address (for example, 00-1A-2B-3C-4D-5E) is your MAC address for that adapter.

If you have both Wi‑Fi and Ethernet, each adapter will have its own MAC address.

Other commands to find your MAC address in Windows
Besides ipconfig /all, there are a couple of other useful commands that can show your MAC addresses on Windows:

• getmac – quickly lists the MAC addresses of your enabled network adapters. Open Command Prompt and type: getmac then press Enter.
• Get‑NetAdapter (PowerShell) – shows MAC addresses for all adapters, including disabled ones. Open Windows PowerShell as administrator and run: Get-NetAdapter

Check the MacAddress column for each adapter.

You don’t have to use all these methods every time. For most people, ipconfig /all or the Network & Internet settings page are enough, but these extra commands are handy for troubleshooting.

Method 2: Find MAC address from Network & Internet settings (Windows 11)

On Windows 11, you can also find the MAC address from Settings.

1. Press Windows key + I to open Settings.
2. Click Network & Internet.
3. Select Wi‑Fi (for wireless) or Ethernet (for wired).
4. Click Hardware Properties.

You’ll see:

• Physical address (MAC) – this is your MAC address for that adapter.

Method 3: Find MAC address from Network Connections (Windows 10/11)

If you prefer the classic Control Panel style:

1. Press Windows key + R, type ncpa.cpl, and press Enter to open Network Connections.
2. Right‑click your active network adapter (Wi‑Fi or Ethernet) and choose Status.
3. Click Details….
4. In the Network Connection Details window, look for Physical Address.

That value is the MAC address of the selected adapter.

How to Find the MAC Address on Other Devices (Quick Overview)

You may also need the MAC address of your phone, smart TV, or other devices to set up filters in your router.

On Android

Steps vary slightly by manufacturer, but generally:

1. Open Settings.
2. Go to About phone or About device.
3. Tap Status or Hardware information.
4. Look for Wi‑Fi MAC address.

On iPhone / iPad (iOS)

1. Open Settings.
2. Tap General > About.
3. Look for Wi‑Fi Address — this is your Wi‑Fi MAC address.

On a Smart TV or game console

Usually, under Settings > Network > About or Status, you will see a MAC address field. Exact paths depend on the brand.

Can I Change a MAC Address on my PC?

By default, the MAC address is hard‑coded into the network hardware at the factory. However, many operating systems allow you to override or spoof the MAC address in software.

Reasons you might change (spoof) a MAC address include:

• Privacy on public Wi‑Fi networks
• Bypassing MAC address filters (for legitimate testing on your own network)
• Troubleshooting conflicts if two devices somehow share the same MAC on the same LAN

On Windows, advanced users can sometimes:

• Change the MAC address from the network adapter’s properties in Device Manager (if the driver supports it).
• Use third‑party tools to spoof the MAC.

Important: Some networks use MAC filtering as a security layer. Bypassing MAC filters on networks you do not own or manage can be against the rules or even illegal. Only change or spoof MAC addresses on networks you control or have permission to test.

In most home setups, you don’t need to change the MAC address at all.

What Happens if Two Devices Have the Same MAC Address?

In theory, every MAC address should be globally unique. In practice:

• There are finite ranges assigned to manufacturers.
• Manufacturers may reuse MAC ranges across different product lines.

The chance of two devices with the same MAC address ending up on the same local network is very low but not impossible, especially if MAC addresses are spoofed.

If two active devices on the same LAN share the same MAC address, you may see:

• Connection drops or unstable network behaviour.
• Devices not getting proper IP addresses from DHCP.
• Packets going to the wrong device.

In that case, you can:

• Power off one device and see if the problem disappears.
• Change (spoof) the MAC address on one of the devices if necessary.
• Check for driver or firmware bugs.

Why Do MAC Addresses Matter in Everyday Use?

Even if you never think about networking, MAC addresses quietly enable your network to function properly. Some common use cases:

• MAC filtering on routers – You can allow or block devices based on their MAC addresses.
• Parental controls – Many routers let you limit internet access for specific MAC addresses during certain hours.
• Static DHCP reservations – You can tell your router to always assign the same local IP to a specific MAC address (useful for printers, NAS devices, or home servers).
• Network troubleshooting – Knowing the MAC address helps identify exactly which device is causing a problem.

For most home users, MAC addresses are part of the “advanced settings” that you don’t touch often, but understanding them can help when you:

• Secure your Wi‑Fi.
• Fix device connectivity issues.
• Configure port forwarding or remote access.

MAC Address and IPv4 / IPv6

Your MAC address and IP address work together when your device communicates on a network. On your local network, devices use MAC addresses to deliver data frames to the right device. For routing traffic across networks and the internet, they use IP addresses (IPv4 or IPv6). Even as more networks move from IPv4 to IPv6, MAC addresses still work the same way on the local network.

Summary

• A MAC address (Media Access Control address) is a 48‑bit hardware identifier for a device’s network interface.
• It is used mainly on the local network to deliver data to the correct device.
• You can easily check MAC addresses on Windows 11 and 10 via Command Prompt, Settings, or Network Connections.
• MAC addresses are different from IP addresses, but they work together for reliable communication.
• Understanding MAC addresses can help you with Wi‑Fi security, parental controls, DHCP reservations, and troubleshooting.

Frequently Asked Questions