How to find the MAC address of a device on a Wi-Fi network

In today's digital space, where wireless technology has become the standard, MAC address (Media Access Control) acts as a unique digital ID for each gadget. This physical identifier is assigned to the network interface at the factory and is necessary for the router to distinguish between connected devices and route traffic correctly. When setting up parental controls, restricting guest access, or simply wanting to find out who's hogging all your bandwidth, identifying the device using this code is the first step.

Users often face the need to filter access when Wi-Fi router is configured to work only with a trusted list of devices. In this situation, knowing how to quickly and accurately determine the MAC address of a specific device becomes a critical skill. Without this setting, it's impossible to add a new device to the whitelist or block an uninvited guest attempting to connect to your network.

There are many ways to obtain this information, and the method you choose depends on the specific device you're interested in: your own smartphone, someone else's laptop, or perhaps a smart light bulb. In this article, we'll cover all available options in detail, from viewing the device's settings to using the command line and the router's administrative panel.

What is a MAC address and why is it needed?

MAC address is a 48-bit identifier written in hexadecimal format. It appears as a sequence of 12 characters (numbers 0 through 9 and letters A through F), separated by colons or hyphens, for example, 00:1A:2B:3C:4D:5EThis code is hardcoded into the device's network card and is theoretically unique worldwide, although modern technology allows it to be modified programmatically.

The primary function of this identifier is to operate at the data link layer of the OSI model. When data is transmitted over a local network, the sender and recipient MAC addresses are used to deliver frames of information within the network segment. The router uses this data to determine which client among the dozen connected clients should receive a data packet containing a website or video.

• 🔐 Safety: MAC address filtering allows you to allow Wi-Fi access only to known devices, blocking all others, even if they know the password.
• 📊 Monitoring: The network administrator can track the activity of specific users and the amount of traffic they consume.
• ⚙️ Static IP: To set up a static IP address (so that it does not change after reconnection), the binding is made to the MAC address.

⚠️ Attention: Don't rely on MAC address filtering as your only security measure. A skilled attacker can "clone" the address of a trusted device and gain access to the network by spoofing their identity.

How to find the MAC address on Android and iOS smartphones

Mobile device owners most often need this parameter to connect to corporate networks or configure a router. On smartphones running Android The path to the information may differ slightly depending on the version of the operating system and the manufacturer's shell, but the logic remains the same.

Usually it is enough to go to the section Settings, then select the item About the phone or System and find the subsection Status or General informationThe primary MAC address will be listed there. However, modern versions of Android (starting with 10) and iOS have a randomization feature to protect privacy.

Why might the address change?

Modern smartphones use a "private Wi-Fi address." This means the device generates a random MAC address for each new network to prevent trackers from monitoring the user's movements. For a home network, it's often best to disable this feature if you use address filtering.

On devices Apple iPhone or iPad The situation is similar. In the Wi-Fi settings, there may be an "i" icon next to the name of the connected network. Clicking on it will reveal the "Wi-Fi Address" field. It's important to understand the difference between the actual physical address and the one currently in use.

• 📱 Android: Settings → About phone → General information → Wi-Fi MAC address.
• 🍏 iOS: Settings → General → About → Wi-Fi Address.
• 🔄 Randomization: You can enable or disable the use of a private address in the settings of a specific Wi-Fi network.

Finding an address on Windows and macOS computers

On personal computers running Windows There are several ways to obtain information about a network interface. The fastest and most reliable method is using the command line. This is a universal method that works on all OS versions, from Windows 7 to Windows 11.

To do this, press the key combination Win + R, enter cmd and press Enter. In the window that opens, enter the command ipconfig /allThe system will display a detailed list of all network adapters. Find the section corresponding to your wireless connection (usually called "Wireless") and look for the line labeled "Physical Address."

C:\Users\User> ipconfig /all
...
Wireless LAN Adapter Wireless Network:
Physical address . . . . . . . . . . . : A4-5E-60-C2-11-33
IPv4 address. . . . . . . . . . . . . . . : 192.168.1.55
...

For users macOS It won't be difficult to find this data either. Just hold down the key Option and click on the Wi-Fi icon in the top menu. The drop-down list will display technical information, including the line AddressAn alternative way is through system settings: System Preferences → Net → Wi-Fi → Additionally → tab Equipment.

Viewing connected devices via a router

The easiest way to find out your MAC address any A device currently connected to your Wi-Fi network can be identified by accessing the router's administrative panel. This method is ideal if you need to identify someone else's gadget or smart device that doesn't have a display.

You need to open your browser, enter the gateway IP address (often this is 192.168.0.1 or 192.168.1.1) and log in. Interfaces from different manufacturers (TP-Link, ASUS, Keenetic, MikroTik) are different, but the logic is the same: look for the sections "Client List", "DHCP Server", "Status" or "Wireless Statistics".

This list displays all active connections. Typically, the router displays the IP address, MAC address, and sometimes the device name (Hostname). If the name isn't listed, you can identify the device by comparing the first six characters of the MAC address (OUI) with a manufacturer database or simply unplugging and plugging the device in question to see which line appears or disappears.

Table of manufacturers and prefixes

The first three bytes (6 characters) of a MAC address are called OUI (Organizationally Unique Identifier). They indicate the organization to which this address range was allocated. Knowing the prefix, you can determine which manufacturer owns the network equipment.

Below is a table with examples of popular brand prefixes. This can be helpful when analyzing the connection list to determine whose phone or laptop is connected to the network if device names are not configured or hidden.

⚠️ Attention: Router and operating system interfaces are constantly being updated. The layout of menu items may differ from what's described. If you can't find the option you need, check the official documentation for your router model.

Using network scanners and commands

For advanced users or system administrators, there are specialized utilities and commands that allow you to scan your network and identify the MAC addresses of all active hosts. This is especially useful when you need to find a device that isn't listed in the router's default DHCP list (for example, one with a static IP address).

In Windows you can use the command arp -aIt displays the ARP table, which contains mappings between IP addresses and physical addresses of devices with which your computer has recently communicated. However, this method won't show everyone, only those who have been in contact with your PC.

C:\Users\Admin> arp -a
Interface: 192.168.1.10
Internet Address Physical Address Type
192.168.1.1 00-11-22-33-44-55 dynamic
192.168.1.55 AA-BB-CC-DD-EE-FF dynamic

On Android smartphones, there are network scanner apps (such as Fing or Network Analyzer) that do the same thing, but with a graphical interface. They not only display MAC addresses but can also often identify the device model and manufacturer using OUI databases.

Frequently Asked Questions (FAQ)

Is it possible to change the MAC address on a device?

Yes, many operating systems (Windows, Linux, macOS, and Android with root access) allow you to change your MAC address programmatically. This is called spoofing. However, the physical address stored on the chip remains unchanged and is restored after resetting network settings or reinstalling drivers.

What if two devices have the same MAC address?

Under normal circumstances, this is impossible, as addresses are unique. If this occurs (a MAC address conflict), it's usually the result of a manufacturer error or a manual address change by the user. Network conflicts will occur, packets will be lost, and one of the devices will be unable to connect. The address on one of them will need to be changed.

Does my ISP see my MAC address?

Your ISP sees your router's MAC address (WAN port) when it's connected directly to the ISP's cable. The ISP doesn't see the MAC addresses of your internal devices (phones, laptops) because they're hidden behind your router's NAT (Network Address Translation).

Does resetting a router reset the MAC address?

No, the MAC address is a physical characteristic of the network interface and is hardcoded into the device's memory. A reset only returns software configurations (passwords, network name, PPPoE settings) to factory defaults, but does not change the hardware ID.

Why do you need to know the MAC address to play online?

Some older games or specific corporate networks bind licenses or access to a unique network card ID. This may also be necessary for setting up Wake-on-LAN (remotely turning on a computer) over the internet.