How to find the MAC address of a device connected to WiFi

In a modern home network, you often need to identify a specific device. You might notice unusual traffic activity or simply want to know how many devices are currently using your access point. MAC address (Media Access Control Address) is a unique identifier of a network card that allows you to accurately identify the hardware in the router's client list, even if the device name (hostname) is not displayed or looks unclear.

Understanding how to view this identifier gives the user complete control over the network. It's not just a string of hexadecimal digits, but the key to setting up filtering, parental controls, and security. In this article, we'll cover in detail methods for discovering addresses both through the router interface and using third-party utilities on PCs and smartphones.

It's worth noting that network equipment manufacturers use different terms to refer to client lists. Somewhere it's Client List, somewhere Wireless Station or Connected DevicesHowever, the search principle remains the same for all models, whether TP-Link, Keenetic, Asus or MikroTikThe main thing is to know where exactly to look in the web interface.

What is a MAC address and why should I look for it in the list of WiFi clients?

MAC address — This is a unique serial number assigned to a network interface during manufacturing. Unlike an IP address, which can change with each reconnection, this identifier is hardcoded and typically does not change. This is why network administrators rely on it to continuously identify devices.

Why might you need to know the MAC address of a smartphone or laptop connected to WiFi? First and foremost, it's a security issue. If you see an unknown device in the list, you can block its access by adding its address to the filtering blacklist. This is also necessary for configuration. MAC bindings, when the router allows only trusted gadgets into the network.

⚠️ Note: Some modern operating systems, such as iOS and Android, use MAC address randomization to protect privacy. This means that your device may use different identifiers when connecting to different networks.

Knowing the exact address also helps in diagnosing problems. If your TV is lagging, you can find out which one is causing it. Smart TV traffic and limit its speed without affecting other devices. This is especially important in densely populated apartment buildings.

Finding a MAC address through the router's web interface

The most reliable and accurate way to see all connected devices is to access the router's settings. The router's web interface is the central control center, and it knows about every data packet passing through it. You don't need any third-party software; a browser is enough.

First, you need to log in to your control panel. Typically, you need to enter the gateway's IP address in the browser's address bar, often 192.168.0.1 or 192.168.1.1, and enter your login and password. After logging in, look for a section related to wireless network or system status. This section may have different names in different firmware versions.

Here's what it looks like on popular equipment models:

• 📡 TP-Link: Go to the menu Wireless (Wireless mode) → Wireless Statistics (Statistics) or DHCP → Client List.
• 🌐 Keenetic: The main network status page displays a list of all clients. Click on a device icon to view details, including MAC address.
• 🛡️ Asus: In the section Network map (Network Map) Select the client icon on the right. This will display a complete list of connected devices with their physical addresses.

The interface may vary depending on the firmware version. If you recently updated your router, the layout of the options may have changed. Always check the official manuals for your specific model if you can't find the section you need right away.

Using the Windows Command Prompt to View the ARP Table

For users who prefer to work with a Windows computer, there's a quick way to get information about network neighbors without accessing the router's settings. We'll use the built-in command line utility and the ARP (Address Resolution Protocol).

Open the command prompt. To do this, press Win + R, enter cmd and press Enter. First, you need to refresh the ARP cache to ensure the data is current. Enter the command arp -d (Administrator privileges required) or simply wait for the system to update the tables automatically. Then enter the command to display the list:

arp -a

You'll see a list of IP addresses and their corresponding physical addresses. However, there's a catch: this command will only show devices with which your computer has recently communicated. To see everyone, you can first ping the entire address range of your subnet.

Create a text file with the extension .bat and paste the following code there for scanning:

for /L %i in (1,1,254) do ping -n 1 -w 100 192.168.1.%i
arp -a

Please note: replace 192.168.1 to the first three octets of your network. This script will "knock" on all possible addresses, forcing them to respond, and then arp -a will show their MAC addresses.

Network scanner apps for Android and iOS

If you don't have a computer handy and don't want to bother with your router settings, mobile apps can help. Smartphones have powerful network modules that can scan your local network and identify all its participants. This is the fastest way for the average user.

One of the most popular and functional applications is FingIt is available for both Android, and for iOSAfter starting the scan, the program will display a list of all devices, their manufacturers (the brand is determined by the first bytes of the MAC address), IP addresses, and, of course, the required identifiers.

Other useful utilities:

• 📱 Network Scanner: Simple interface, shows open ports and MAC addresses.
• 🔍 IP Tools: A powerful tool for network engineers, including ping, traceroute and LAN scanner.
• 📶 WiFi Analyzer: More about signals, but can also show connection details.

It's important to understand that on iOS, due to system limitations, apps may not be able to see all the details of other devices unless they're on the same subnet or if strict privacy settings are enabled. On Android, scanning capabilities are typically more comprehensive.

⚠️ Important: For network scanners to work correctly, make sure your smartphone and the devices being scanned are connected to the same WiFi network (same SSID and 2.4/5 GHz frequency). Guest networks often isolate clients from each other.

Manufacturers' MAC address mapping table

Often, when looking at the list of connected devices, we see unfamiliar names or simply a jumble of characters. The first six characters (3 bytes) of the MAC address are called the OUI (Organizationally Unique Identifier) ​​and indicate the network card manufacturer. This helps us understand what kind of device has connected: your new smart kettle or someone else's laptop.

Below is a table with examples of common prefixes:

Knowing the manufacturer makes it easier to identify the device. For example, if you see a device from Huawei, but you don't have equipment from this brand, it's worth considering. However, remember that many chip manufacturers (for example, Realtek or Espressif) supply modules for hundreds of different smart home brands, so the name may be generic.

What to do if the manufacturer is unknown?

If the MAC address prefix is ​​not detected or shows an unknown manufacturer, this may indicate that the device uses a cheap Chinese chipset without a registered OUI, or the address has been changed software-based (MAC spoofing). In a home environment, this is rarely a sign of an attack; it's more often a characteristic of budget electronics.

Identification Issues: Randomization and Hidden Devices

In pursuit of privacy, modern operating systems are introducing features that complicate the lives of home network administrators. Starting with iOS 14 and Android 10, devices use random MAC addresses by default when connecting to WiFi. This means that each time a device connects to your network, it may present itself with a different identifier.

This creates problems for static IP mapping and filtering. You whitelisted a device, updated the router, and suddenly it lost access. Why? Because its "real" MAC address changed to a virtual one. To see the real, hardware address, you need to disable this feature in the WiFi settings on the device itself.

How to disable randomization:

• 🍏 iOS: Settings → Wi-Fi → Tap the "i" next to the network → Turn off "Private Wi-Fi address".
• 🤖 Android: Settings → Wi-Fi → Network gear → Advanced → Privacy → Select "Use device MAC address".
• 💻 Windows 10/11: Settings → Network & Internet → Wi-Fi → Manage known networks → Properties → Random hardware addresses → Off

After changing the settings, the device will reconnect and appear in the router with a permanent, factory address. This is necessary for the proper operation of smart home systems, where the gateway needs to know the permanent address of the sensor or light bulb.

FAQ: Frequently Asked Questions

Is it possible to change the MAC address of your device to hide?

Yes, this procedure is called MAC spoofing. In Windows, this is done through the Device Manager (Advanced tab), and in Linux, using commands ip link or ifconfig, and in macOS via the terminal. However, the router will still see the new address, it will just be different from the factory one.

Why are there two devices with the same name in the router list?

Most likely, one of them is connected via cable (LAN) and the other via WiFi, or the device supports dual-band mode and is connected to both frequencies (2.4 GHz and 5 GHz) simultaneously. Check the "Interface" or "Connection Type" column.

Is it dangerous if I see an unknown MAC address?

Not always. It could be a forgotten gadget, a smart plug, or a guest's device. But if you don't recognize any of the devices, it's best to change your WiFi password and enable MAC address filtering, leaving only your own devices.

Will the MAC address be reset when I flash the router?

No, the MAC address is hardcoded into the network card's chip and stored in non-volatile memory. A software reset or firmware update won't affect this unique identifier unless you specifically change it in the cloning settings.