How to Check How Many Devices Are Connected to Your Wi-Fi: A Complete Guide

Have you noticed your internet is slower than usual? Or do you suspect someone is accessing your network? Checking the number of devices on Wi-Fi — the first step to diagnosing the problem. In this article, we'll cover all available methods: from built-in router tools to specialized programs. You'll learn not only How to count connected gadgets, but also how identify other people's devices, block them and protect your network from unauthorized access.

Many users mistakenly believe that this task requires in-depth technical knowledge. In fact, most methods don't require installing additional software or performing complex manipulations. All you need is to know where to look in your router settings or which app to download. And if you want to automate monitoring, we'll show you how to set up notifications for new connections.

It is important to understand that the number of connected devices affects not only the internet speed, but also your network securitySomeone else's smartphone or laptop can become a source of viruses, data leaks, or even attacks on other devices on your local network. Therefore, regular scanning isn't paranoia, but a sensible precaution.

1. Checking via the router's web interface

The most reliable and universal way is to log in router control panel. Almost all modern models (from TP-Link And ASUS to Keenetic And MikroTik) display a list of connected devices in real time. Here's how:

Find first Your router's IP address. Usually it is 192.168.0.1 or 192.168.1.1, but may vary depending on the model. You can find it:

• 📱 On Android: Settings → Wi-Fi → [your network] → Advanced (field "Gateway").
• 🍎 On iPhone/iPad: Settings → Wi-Fi → (i) next to your network → Router.
• 💻 On Windows: run the command ipconfig V Command line and find the line "Default gateway".

Next, enter this address in your browser (for example, http://192.168.0.1) and log in. The default login and password are usually indicated on the router sticker (most often admin/admin or admin/password). After logging in, find the section with the list of devices. Different manufacturers have different names for it:

• 🔍 TP-Link: DHCP → DHCP Clients or Wireless Mode → Wireless Mode Statistics.
• 🔍 ASUS: Network Map → Clients.
• 🔍 Keenetic: Devices → Device List.
• 🔍 Zyxel: Network → Active Connections.

In this list you will see MAC addresses, IP addresses And device names (unless they're hidden). Pay attention to unknown gadgets—you can block them right here (usually there's a "Block" or "Disable" button).

⚠️ Note: Some routers (especially budget models) only show devices connected via Wi-Fi, but not those that are connected via cable. To see the full list, look for the section LAN or DHCP clients.

2. Using mobile applications

If you are too lazy or scared to go into the router settings, you can use special applications For smartphones, they scan the network and display all connected devices, sometimes even with additional information (model, manufacturer, OS type).

Here are the top 5 proven utilities:

• 📱 Fing (Android/iOS) — the most popular app with network scanning, speed testing, and vulnerability detection features. The free version displays up to 5 devices.
• 📱 NetScan (Android) - a simple scanner with the ability to save connection history and export data.
• 📱 IP Network Scanner (Android) - scans the network by IP range and determines MAC addresses.
• 🍎 Network Analyzer (iOS) - in addition to the list of devices, it shows busy ports and network activity.
• 📱 WiFi Guard (Android) - specializes in detecting unauthorized connections and sends notifications about new devices.

How to use such applications? For example, in Fing:

1. Connect to your Wi-Fi network.
2. Launch the application and click "Scan".
3. Wait for the process to complete (usually 10-30 seconds).
4. Review the list of devices. Unknown devices will be marked as "Unknown."

The advantage of mobile applications is convenience and speedDisadvantage: They don't always show exact device names (especially if they are hidden), and some features (such as blocking) are only available in paid versions.

How do apps determine the device manufacturer?

They analyze the first 6 characters of the MAC address (OUI - Organizationally Unique Identifier), which are assigned to manufacturers by the IEEE. For example, a MAC address starting with 3C:5A:B4, is owned by Google, and B8:27:EB — Raspberry Pi.

3. Command line (Windows, macOS, Linux)

For experienced users or those who like to "touch" the network with their hands, it is suitable command lineThis method works on any device, from a laptop to Raspberry Pi — and does not require installation of additional software.

On Windows open Command line (Win + R → cmd) and run:

arp -a

This command will show the table ARP cache — a mapping of the IP and MAC addresses of all devices your computer has recently interacted with. To see only active connections on your network, first find out its IP range (e.g., 192.168.0.0/24) and filter the output:

arp -a | findstr "192.168.0"

On macOS or Linux use:

nmap -sn 192.168.0.0/24

(replace 192.168.0.0/24 to your IP range). This command will scan the network and show all active hosts with MAC addresses and names (if available).

To determine which device belongs to which MAC address, you can use the online database MAC Vendor Lookup or by command:

getmac /v /fo list

(only for Windows).

⚠️ Warning: Scanning the network with nmap This command may be blocked by some routers as suspicious activity. If the command doesn't work, check your firewall settings or use alternative methods.

Find your router's IP address|Determine your local network range (e.g. 192.168.0.0/24)|Open a command prompt as administrator (for Windows)|Make sure your device is connected to the network you're testing-->

4. Specialized programs for PC

If you need to do more than just count devices, monitor the network in real time, consider desktop programs. They offer advanced features: traffic graphs, new connection alerts, device blocking, and even vulnerability analysis.

The best Wi-Fi monitoring software:

For example, in Advanced IP Scanner enough:

1. Download and run the program (no installation required).
2. Click "Scan" - the program will automatically detect the IP range.
3. Wait for the scan to complete (usually 1–2 minutes).
4. View a list of devices with MAC addresses, manufacturers, and open ports.

The only program on the list that can directly block a device is GlassWire (in the paid version). The others only display information, and blocking must be configured in the router.

5. Checking through the provider (if the router is rented)

If your router is provided by your internet service provider (e.g. Rostelecom, Beeline, MTS), perhaps he has limited functionality in the web interface. In this case, you can:

• 🌐 Log in provider's personal account - some operators (for example, Dom.ru) show a list of connected devices right there.
• 📞 Call support and ask them to check active connections to your account.
• 📄 Review your contract — sometimes providers limit the number of simultaneously connected devices (for example, the "For one device" plan).

Please note that The provider only sees devices that access the Internet, not those simply connected to the local network. For example, if someone is using your Wi-Fi but isn't accessing websites, the operator won't detect them.

⚠️ Note: Some providers block access to the settings of rented routers. If you can't access the control panel 192.168.0.1, try an alternative address (eg. 192.168.100.1 for routers Rostelecom) or check the details with support.

6. How to identify someone else's device and block it

Finding unknown gadgets in the list is half the battle. Now you need to figure out Whose device is this? And what to do with it. Here's the algorithm:

Step 1. Device identification

• 🔍 Take a look device name (if it exists). For example, "Vasya's iPhone" clearly belongs to someone in the household.
• 🔍 Check it out MAC address through MAC Vendor Lookup. If the manufacturer Apple, and you don’t have equipment of this brand - this is a reason to be wary.
• 🔍 Please note IP addressIf it is static (does not change when reconnecting), it could have been set manually.

Step 2: Checking legitimacy

• 📵 Disconnect all your devices from Wi-Fi for 5-10 minutes and see if the unknown gadget remains on the list.
• 📡 Check it out Wi-Fi signalIf someone else's device is connected but the signal is weak, someone else might be accessing your network from the street.
• 🕒 Take a look connection timeIf your device appears at night or when you're not around, it's a clear sign of a break-in.

Step 3. Blocking

To disconnect someone else's device:

1. Go to the router settings (see Section 1).
2. Find the section Wireless Mode → MAC Filter (or similar).
3. Add the MAC address of someone else's device to the blacklist.
4. Save the settings and reboot the router.

If the blocking did not work, change your Wi-Fi password to a more complex one (at least 12 characters, with numbers and special characters). Also recommended:

• 🔒 Enable WPA3 instead of WPA2 (if the router supports it).
• 🔄 Disable WPS - This is a vulnerable protocol that can be easily hacked.
• 📡 Hide network name (SSID)so that it is not visible in the public list.

7. Automated Monitoring: How to Receive Notifications About New Devices

To avoid checking the network manually, you can set up automatic alertsHere are some ways:

Method 1: Apps with notifications

• 📱 WiFi Guard (Android) - Sends a push notification when a new device appears.
• 📱 Fingbox (requires a separate device) - monitors the network 24/7 and blocks suspicious activity.

Method 2. Scripts for routers with DD-WRT/OpenWRT firmware

If your router supports custom firmware, you can set up a script that will send an email or message to Telegram on new connection. Example script for OpenWRT:

#!/bin/sh
NEW_DEVICES=$(iw dev wlan0 station dump | grep -c "Station")
if [ "$NEW_DEVICES" -gt "5" ]; then
echo "New device detected!" | mail -s "WiFi Alert" your@mail.ru
fi

Method 3. Integration with a smart home

Some smart home systems (eg. Home Assistant) can track connected devices and send notifications to linked messengers.

Automation is especially useful for offices or large buildings where new gadgets (guests, employees) are constantly being added to the network. It helps respond promptly to suspicious activity without manual control.

8. Common mistakes and how to avoid them

When checking Wi-Fi devices, users often encounter common problems. Here's how to solve them:

Error 1: The router does not show all devices

• 🔌 Check if it is enabled DHCP server in your router settings. If it's disabled, some devices may not be displayed.
• 🔄 Restart your router—sometimes the connection cache gets reset.
• 📡 Make sure you watch and Wi-Fi, And LAN (cable connections).

Error 2. The unknown device turns out to be yours

• 📱 Check it out all gadgets in the house: smart light bulbs (Xiaomi, Philips Hue), columns (Amazon Echo, Yandex Station), printers, IP cameras.
• 🎮 Don't forget about gaming consoles (PlayStation, Nintendo Switch) - they also appear on the list.

Error 3: After blocking, the device reconnects

• 🔄 The attacker could spoof MAC addressIn this case, only changing the Wi-Fi password will help.
• 🔒 Check if it is in use guest network — its settings may differ from the main one.

Error 4: Apps show different numbers of devices

• 📡 This is normal: different programs scan the network differently. For example, Fing may not see devices that are sleeping or have disabled packet exchange.
• 🔄 For accuracy, use several methods (for example, the router's web interface + command line).

FAQ: Answers to Frequently Asked Questions

Is it possible to find out what websites a device visits on my network?

Yes, but this requires special tools:

• 🖥️ On routers with firmware DD-WRT or OpenWRT You can enable traffic logging.
• 📊 Programs like WireShark or GlassWire analyze packets and show visited resources.

Attention: Tracking other devices' traffic may violate privacy laws (e.g., Article 137 of the Russian Criminal Code). Use this feature only for verification purposes. their own gadgets or with the consent of users.

Why do duplicate MAC addresses appear in the device list?

This can happen for several reasons:

• 🔄 Device changed IP (for example, after rebooting the router), but the MAC address remains the same.
• 📱 Some gadgets (for example, smartphones with Dual SIM) can create multiple network interfaces.
• 🤖 Viruses or malware can spoof MAC addresses.

If there are a lot of duplicate addresses, check your network for viruses or reset your router settings.

How to check Wi-Fi for viruses?

Viruses can spread online through vulnerable devices (such as old routers or smartphones). To check:

1. Scan all connected gadgets with an antivirus (for example, Kaspersky or Dr.Web).
2. Update your router firmware to the latest version (via the web interface).
3. Check your router for known vulnerabilities using the service Router Checker.
4. Turn it off remote control And UPnP in the router settings.

If your suspicions are confirmed, reset the router to factory settings and configure it again.

How many devices can be connected to one Wi-Fi?

It depends on:

• 📡 Router models: budget ones support 10–20 devices, top-end ones (for example, ASUS RT-AX88U) — up to 100+.
• 🌐 Provider's tariff: Some operators limit the number of gadgets that can be used simultaneously (for example, 5–10).
• 📶 Connection type: on frequency 2.4 GHz there may be more devices, but the speed will be lower than on 5 GHz.

If there are too many devices, the network starts to slow down. Solution:

• 🔄 Separate devices into two frequencies (2.4 GHz And 5 GHz).
• 📡 Buy Mesh system (For example, TP-Link Deco) to distribute the load evenly.
• 🛑 Limit bandwidth for non-essential gadgets (e.g. smart light bulbs).

Is it possible to find the location of a device on my network?

It's difficult to determine the exact location (e.g. a room), but you can roughly estimate the distance to the router:

• 📶 Check your router settings signal strength (RSSI) connected device. The lower the value (for example, -30 dBm), the closer the gadget.
• 📱 Apps like WiFi Analyzer (Android) builds a signal strength graph that can be used to judge location.

For accurate tracking, specialized solutions are needed (for example, a system Ubiquiti UniFi with support RTLS), but they are expensive and are used mainly in offices.