How to find out the number of Wi-Fi connections: all methods for a router, phone, and PC

Do you suspect someone is accessing your Wi-Fi? Or do you simply want to monitor your network load? Number of active connections — a key parameter that can help detect unauthorized access, optimize internet speed, and even prevent cyberattacks. In this article, we'll cover all possible verification methods: from built-in router tools to third-party utilities for PCs and smartphones.

Many users mistakenly believe that it is enough to look into the router settings - but in practice, they do not always display hidden devices or devices with DHCP disabled. We'll show you how to get a complete picture, including devices in standby mode, and explain why some methods don't work on all router models. We'll also explain how to distinguish legitimate connections from untrusted devices using their MAC address or hostname.

If you have never changed your Wi-Fi password since purchasing your router, the likelihood of your network being "infected" by third-party devices reaches 60–70% (data from the company's research Kaspersky (by 2023). Even one extra connection can reduce internet speed by 20–30%, especially if your "neighbor" is downloading torrents or watching 4K videos.

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1. Checking via the router's web interface (the most reliable method)

Any modern router keeps a log of connected devices. To see a list, simply log into the admin panel. The instructions are universal for most brands, but the menu paths may vary.

First, connect to the router's network (via Wi-Fi or cable) and open a browser. Enter the device's IP address in the address bar. This is typically:

• 🔹 192.168.0.1 - For TP-Link, D-Link, Tenda
• 🔹 192.168.1.1 - For ASUS, Zyxel, Mercusys
• 🔹 192.168.8.1 - for some models Huawei
• 🔹 my.keenetic.net — for routers Keenetic

If the standard addresses don't work, find the correct IP via the Windows command line:

ipconfig /all

Look for the line Main gateway - this is the address of your router.

After logging into the control panel (the login and password are usually located on the router sticker), find the section with connected devices. Here are the paths for popular brands:

⚠️ Attention: In some firmware versions (especially on older routers), the device list is only updated after a reboot. If you don't see new connections, try restarting the router through the menu. System → Restart.

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2. Mobile apps for Wi-Fi monitoring

If you're too lazy to access your router settings or don't have access to a PC, use specialized smartphone apps. They scan your network and display all connected devices, including hidden ones.

Top 3 proven utilities:

• 📱 Fing (Android/iOS) — identifies device manufacturer by MAC address, tests network speed, and scans ports for vulnerabilities. The free version displays up to 5 devices.
• 📱 WiFi Analyzer (Android) — visualizes channel load and displays a list of connected devices. Suitable for finding the optimal Wi-Fi channel.
• 📱 NetScan (iOS) — Scans the local network, displays IP, MAC address, and hostname. New device notifications are available.

How to use Fing (step by step):

1. Connect to your Wi-Fi network.
2. Launch the app and click Scan.
3. Wait for the process to complete (usually 10-30 seconds).
4. Review the list of devices. Green ones are active, gray ones are inactive (but have been connected before).

Click on the MAC address in Fing → Check the manufacturer (e.g. Xiaomi, Apple)

Compare with your gadgets from the list

Disconnect the device via the router (if it is confirmed that it is someone else's)

Change your Wi-Fi password to a more complex one (at least 12 characters with numbers and special characters) -->

⚠️ Attention: Mobile apps don't always detect devices connected via a cable (LAN). For a complete analysis, combine them with checking through the router's web interface.

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3. Windows Command Prompt: Who's Connected to Your Wi-Fi

If you prefer to work without third-party programs, use Windows' built-in tools. This method works for devices connected to the same network as your PC.

Open Command line as administrator (click Win + X → Windows Terminal (Administrator)) and run the command:

arp -a

You'll see a table with IP addresses and their corresponding MAC addresses. To filter only active connections, first run:

ping 192.168.x.255

(Where x — your subnet, usually 0 or 1), and then again arp -aNow only devices that responded to ping will remain in the list.

To find out which manufacturer a MAC address belongs to, use the first 6 characters (e.g. A4:4C:C8) and check them through the service MAC Vendors Lookup. For example, 3C:5A:B4 - This Google (devices Nest or Chromecast), A 78:31:C1 — Apple.

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4. PC programs: WireShark, Advanced IP Scanner, and others

Desktop utilities are suitable for in-depth network analysis. They not only show the number of connections but also visualize traffic, identify suspicious activity, and even block unwanted devices.

Top 3 Wi-Fi Monitoring Software:

• 🖥️ WireShark — a professional packet analyzer. It displays all network requests in real time, but requires some experience. Free.
• 🖥️ Advanced IP Scanner — scans the local network, identifies the manufacturer by MAC address, and allows you to remotely shut down your PC. Suitable for beginners.
• 🖥️ Angry IP Scanner — a cross-platform utility (Windows/macOS/Linux). Quickly scans an IP range and exports results to CSV.

Example of work in Advanced IP Scanner:

1. Download the program from official website and install.
2. Start scanning (button Scan).
3. Wait for it to complete. The program will display all devices with their IP, MAC, name, and status (Answers/Doesn't answer).
4. Right-click on the suspicious device → Copy MAC address and check it through MAC Vendors Lookup.

⚠️ Attention: Programs like WireShark can capture data transmitted over the network (including passwords if they are transmitted in cleartext). Avoid using them on public networks (cafes, airports) as this violates privacy laws.

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5. How to distinguish your device from someone else's: MAC and hostname analysis

Found an unknown MAC address in the list? Don't rush to block it. First, check if it belongs to any of your devices.

Identification methods:

• 🔍 Check by manufacturer: the first 3 bytes of the MAC address (e.g. B8:27:EB) are unique to each brand. Use services like MAC Vendors or Wireshark OUI Lookup.
• 🔍 Host name: in the list of devices of the router or programs like Fing the network name is displayed (for example, iPhone-12-Pro or DESKTOP-7V3G1T9). Compare it with your devices.
• 🔍 Ping the deviceIf the device responds to ping but you don't recognize it, try connecting to it via SSH or RDP (if it's a PC). For example:

  ping 192.168.1.100

Example of MAC address decoding:

How to change a MAC address (spoofing)

Attackers often spoof MAC addresses to disguise their devices as legitimate (for example, your smartphone). If you see two identical MAC addresses on the network, this is a sure sign of an attack. To protect yourself, enable MAC binding on your router.MAC address filtering) and allow connections only to trusted devices.

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6. Limiting the Number of Connections: How to Protect Your Network

Found extra devices? Here's how to prevent them from reconnecting:

Protection methods:

• 🔒 Change your Wi-Fi password: use WPA3-Personal (if the router supports it) or WPA2-PSK with a password of at least 12 characters. Avoid simple combinations like 12345678 or qwerty.
• 🔒 Enable MAC filtering: In your router settings, add only your devices to the whitelist. Path: Wireless Mode → MAC Filter.
• 🔒 Disable WPS: This feature simplifies connection, but is vulnerable to brute-force attacks. Find the option WPS → Disable.
• 🔒 Hide SSID: disable network name broadcasting in settings (Hide SSID). This won't protect you from experienced hackers, but it will reduce the number of accidental connections.
• 🔒 Update your router firmware: Outdated software versions contain vulnerabilities. Check for updates in the section System → Firmware Update.

How to enable MAC filtering using an example TP-Link:

1. Log into your router's web interface.
2. Go to Wireless Mode → MAC Filtering.
3. Select mode Allow (instead of Ban).
4. Add the MAC addresses of your devices (find them in your smartphone/PC settings or in the router's connection list).
5. Save the settings and reboot the router.

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7. Common Mistakes and Myths About Wi-Fi Connections

When checking devices, users often encounter false alarms or miss important details. Let's address the most common misconceptions.

Myth 1: "If a device is inactive, it doesn't consume data."

In fact, even "sleeping" gadgets (such as smartphones in standby mode or smart speakers) can periodically exchange data with servers. This applies to:

• 📱 OS updates (Android/iOS download updates in the background).
• 🎤 Smart devices (Amazon Echo, Google Home constantly listen to voice commands).
• 🖥️ PC with it turned on Fast Startup (Windows loads data even when it is turned off.)

Myth 2: "The router shows all connected devices."

In fact, the list may not include:

• 🔌 Devices with static IP (if they do not receive an address via DHCP).
• 🕵️‍♂️ Gadgets with modified MAC (spoofing).
• 🌐 Devices connected via guest network (if it is configured separately).

Myth 3: "Many connections = slow internet"

Speed ​​depends not so much on the number of devices as on their activity. For example:

• 📶 10 smartphones in standby mode put almost no load on the network.
• 🎮 1 PC with a torrent or online game can take up the entire channel.

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FAQ: Answers to Frequently Asked Questions

Is it possible to find out what websites a connected device visits?

Yes, but to do this you need to analyze network traffic using programs like WireShark or through the router log (System Tools → Journal). However:

• 🔒 If the site uses HTTPS, you will see only the domain (for example, vk.com, but not a specific page).
• ⚠️ In some countries, intercepting traffic without the user's consent is illegal.

Why does the router show an unknown device with my MAC address?

This is a sign MAC spoofing — an attack in which an attacker replaces their MAC address with yours to bypass filtering. Actions:

1. Change your Wi-Fi password immediately.
2. Turn it on in your router Anti-spoofing protection (if any).
3. Check the list of connected devices for duplicate MAC addresses.

How can I find out how many devices are connected to my Wi-Fi network without accessing the router?

If you don't have administrator rights, use:

• 📱 Mobile applications (Fing, NetScan).
• 🖥️ PC programs (Advanced IP Scanner, Angry IP Scanner).
• 🐧 Team nmap -sn 192.168.x.0/24 on Linux/macOS (will show all active hosts on the network).

Limitation: These methods will not show devices that block ICMP requests (ping).

How many devices can be connected to one router?

The theoretical limit is 254 devices (maximum addresses in a subnet 192.168.x.x). However, in practice, the restrictions depend on:

• 📶 Router power: budget models (TP-Link TL-WR840N) work stably with 10-15 devices, flagships (ASUS RT-AX88U) — up to 50+.
• 🔄 Connection type: Wi-Fi 6 (802.11ax) supports more devices simultaneously than Wi-Fi 4 (802.11n).
• 📈 Device activities: 20 smartphones in standby mode are not the same as 5 PCs with torrents.

When the limit is exceeded, the router begins to "lose" devices or reduce speed.

Is it possible to block a device by IP instead of MAC?

Yes, but this is less reliable because the IP address may change (if the device receives an address via DHCP). To block by IP:

1. Log into your router's web interface.
2. Find the section Access control or IP filtering.
3. Add the IP address to the blacklist.
4. Save the settings.

Disadvantage of this method: if the device receives a new IP (for example, after rebooting the router), the blocking will be reset.