How to see how many people are connected to Wi-Fi: methods and protection

Has your internet speed suddenly dropped, and are pages loading with a noticeable delay? You might not be the only one using your home network. In the age of smart gadgets and constant online presence, control over connected devices is becoming more than just a whim, but a necessity. Every extra smartphone or laptop connected to your Wi-Fi router, not only steals traffic, but also creates a potential threat to the security of personal data.

There are several proven ways to find out who's using your access point. This can be done either through the router's standard web interface or using specialized mobile apps. In this article, we'll cover all the methods in detail, from the classic settings menu to using modern network scanners, so you can quickly identify uninvited guests.

Understanding how to manage connections is the first step to building a secure home network. Even if you're confident in the strength of your password, regularly checking your client list is a good idea. Sometimes, smart home devices you forgot about, or guest devices left on your trusted list, might connect to your network. Let's figure out how to get a complete picture of what's happening on your network.

Checking via the router's web interface

The most accurate and reliable way to see the real picture of your connections is to log into your router's administrative panel. This is where all the information about which MAC addresses and IP addresses are currently active. This method is universal and works for the vast majority of hardware models, whether TP-Link, Asus, Keenetic or MikroTik.

First, you need to connect to the router's network. This can be done via cable or Wi-Fi. Open any browser on your computer or smartphone and enter your gateway's IP address in the address bar. Most often, this is 192.168.0.1 or 192.168.1.1If these addresses don't work, check the sticker on the bottom of your device—it always contains the latest login information.

After entering your login and password (often admin/admin by default), you'll be taken to the main menu. While interfaces vary by manufacturer, the logic for finding the client list is the same. Look for sections with names like "Client List," "DHCP Server," "Wireless Statistics," or "Network Map." This is where the current number of active connections is displayed.

⚠️ Note: If you changed your router admin password and forgot it, you'll have to reset it to factory settings, which will require you to reconfigure your entire internet connection.

In the web interface, you can often see not only the number of devices but also their names (Hostname), if they are being transmitted correctly. However, sometimes, instead of a clear name like "iPhone-Ivan," you'll see a string of numbers and letters. In this case, it's helpful to check the table below, which shows examples of how data is displayed in different interfaces:

Using this method, you gain direct access to network management. You can not only view but also immediately disable suspicious devices or change the Wi-Fi password without installing additional software. This is the cleanest diagnostic method, independent of your computer's operating system.

Using mobile apps for network analysis

If accessing your router settings via a browser seems daunting, modern mobile apps can help. Your smartphone is always at hand, and you can use it to run a quick diagnostic. Apps scan the network and display all active devices, often providing even more information than the standard router interface, such as the network card manufacturer.

One of the most popular tools is the application FingIt is available for both Android, and for iOSAfter starting the scan, the program will display a list of all devices on the network, their IP addresses, MAC addresses, and even their approximate location (city) based on their IP address. This is useful for determining whether someone from neighboring houses has connected.

Another powerful tool is WiFiman from UbiquitiThis app is completely free and ad-free, a rarity these days. It not only displays a list of clients but also allows you to run a speed test, check the signal strength in different parts of your apartment, and identify the channels with the most interference. While this may be overkill for the average user, it's indispensable for the enthusiast.

It's important to remember that apps operate at the level of your phone. If AP Isolation is enabled on your router, the app may not see other devices on the network, although they will still work. Also, some antivirus software on your phone can block the scanner's access to the local network, so it's important to grant the necessary permissions when you first launch it.

⚠️ Please note: Free versions of popular scanners may contain ads or limit the number of scans. Please read the terms of use carefully before installing.

Diagnostics via the Windows command line

For users who prefer not to install unnecessary programs and feel confident behind the keyboard, using the operating system's built-in tools is an excellent option. The Windows command line allows you to obtain technical information about your network without graphical overhead. It's a quick way for those accustomed to text-based commands.

To get started, open the command prompt. Press the key combination Win + R, enter cmd and press Enter. In the window that opens, enter the command arp -aThis command will display the ARP (Address Resolution Protocol) table, which contains mappings between IP addresses and physical MAC addresses of devices with which your computer has recently communicated.

C:\Users\User> arp -a

Interface: 192.168.1.5 --- 0x3
Internet address Physical address Type
192.168.1.1 00-1a-2b-3c-4d-5e dynamic
192.168.1.15 a1-b2-c3-d4-e5-f6 dynamic
192.168.1.20 11-22-33-44-55-66 dynamic

In the list, you'll see your router (usually the first address) and other devices. However, there's a catch: the ARP table only shows devices your PC has already communicated with. To see everyone, you can first ping the entire address range, but this requires more complex scripts. For a quick check, this method is advantageous because it's native and doesn't require an internet connection to download software.

If you see devices in the list that you definitely don't own (for example, you can identify the manufacturer by the MAC address—the first six characters indicate the brand), this is cause for concern. Compare the number of lines in the command output with the number of devices you know about. If there are significantly more, someone may be secretly using your network.

What is a MAC address and how to decipher it?

A MAC address is a unique identifier for a network card. The first six characters (e.g., 00:1A:2B) identify the device's manufacturer. There are online databases where you can enter these characters to find out whether the address belongs to Samsung, Apple, Intel, or another vendor.

How to identify unknown devices

Just seeing a list of 15 entries with obscure names is half the battle. The main challenge is figuring out what's what. Users often panic when they see a device with a name like "Espressif" or "Hon Hai," wondering where it came from. In reality, these are often your own smart plugs, lamps, or TVs.

The easiest way to identify the problem is by elimination. Turn off Wi-Fi on all known devices (phones, tablets, laptops, smart TVs). Then look at the list of connected clients on the router. Any devices that remain are likely stationary smart home devices or neighbors' "freeloaders."

Pay attention to your connection type. If you have a dual-band router broadcasting two networks (2.4 GHz and 5 GHz), the same device may appear twice if it supports both bands simultaneously (Dual Band). Also, some virtual network adapters on your PC may create the appearance of an extra device.

• 📱 Smartphones and tablets: They are usually named after the model (iPhone, Galaxy, iPad) or have the owner's name in it.
• 💻 Computers: Often have names specified during Windows installation (DESKTOP-XYZ, USER-PC).
• 📺 TVs and set-top boxes: They may be called Android TV, Samsung TV, Chromecast, or have a brand name (LG, Sony).
• 🏠 Smart home: Light bulbs, sockets and sensors are often called by technical names (Tuya, Yeelight, Espressif).

If after all the checks you still have a device you can't identify, try disabling your devices one by one and see if the suspicious entry disappears from the list. This is a time-consuming, but reliable, trial-and-error method that yields a 100% result.

Methods of protection and blocking of intruders

Once the intruder is identified, the question arises: what to do next? Simply kicking them out isn't enough, as they could reconnect within a minute if they know the password. You need to take a series of measures to strengthen your network perimeter. The first step, of course, is to change your Wi-Fi password.

When you change your password, all devices will be disabled, and you'll have to re-enter the new key on each one. This is inconvenient, but effective. Choose a complex password using mixed-case letters, numbers, and special characters. Avoid simple combinations like "12345678" or a phone number.

The second, more advanced method is MAC address filtering. You can enable the "Whitelist" feature in your router settings. In this mode, only devices whose MAC addresses you've manually added to the list will be able to connect to the network. Even if someone learns your password, the router simply won't give them your IP address if their hardware isn't on the whitelist.

⚠️ Warning: The WPS (Wi-Fi Protected Setup) feature, which allows you to connect using a push-button or PIN code, is often vulnerable. We recommend disabling it in your router settings if you're not currently using it.

Don't forget about your guest network either. If you frequently have friends over, create a separate guest Wi-Fi connection for them. This will isolate their devices from your main network, which may contain NAS storage, printers, and personal files. You can easily disable the guest network or change the password for it alone, without affecting your main devices.

Common problems and their solutions

Users may encounter various difficulties while monitoring their network. For example, the device list on the router may not update in real time. Some router models cache data, and a device that has already left the coverage area may remain listed as "active" for another 10-15 minutes.

Another problem is IP address conflicts. If a device with the same IP address that the router has already assigned to someone else appears on the network, internet access may be lost for both users. In this case, rebooting the router can help, as this will reset the DHCP lease table.

Sometimes users complain that they can't access their router settings, even though the password appears to be correct. This may be because you're connected to a different subnet or using a VPN. Before accessing the admin panel, be sure to disable the VPN and ensure you're connected to your home network, not your mobile data plan.

If your router is old and can't handle the number of connected devices (for example, more than 10-15 devices), it may simply freeze or drop connections. In today's world of phones, tablets, TVs, watches, and kettles, an old router can become a bottleneck. Consider upgrading to a more powerful model that supports the standard. Wi-Fi 6.

Questions and Answers (FAQ)

Can my neighbor see my traffic if he is connected to Wi-Fi?

If a neighbor simply connects to your network, they won't automatically be able to see your instant messaging messages or banking passwords, as modern websites and apps use encryption (HTTPS). However, they can see which websites you visit (domain names) and, theoretically, could attempt to attack your devices on the local network if they have vulnerabilities.

Why does the device list show "Unknown Device"?

This means the device isn't broadcasting its friendly name (hostname) or the router can't recognize it. Cheap Chinese smart home gadgets, old printers, or devices with non-standard network drivers often display this error. Use the MAC address for identification.

How many devices can work simultaneously through one router?

Inexpensive home routers can handle 10-15 devices. Mid-range models can handle up to 30-50. High-end gaming and office models can handle 100+ connections. However, the actual number depends not only on the router's bandwidth but also on usage (4K video requires more resources than just messaging).

What should I do if I changed my password, but the "thief" still connects?

This is possible if the attacker has access to the WPS (the router's pushbutton or PIN code) or if you're using a guest network with a simple password. Also, check if you've granted guests access via a QR code they may have photographed. In extreme cases, resetting the router to factory settings and completely reconfiguring it from scratch may help.