Have you noticed your internet is slower than usual? Or perhaps you suspect someone is using your Wi-Fi without permission? In today's world, with the number of connected devices in the home growing every year (smartphones, smart speakers, cameras, refrigerators), monitoring your network is becoming increasingly difficult. But here's the good news: you can check who's connected to your router in minutes—and it doesn't require any technical expertise.
In this article we will discuss all current diagnostic methods — from standard tools in the router's web interface to advanced network scanners. You'll learn how to distinguish legitimate devices from "foreign" ones, what to do if you detect an unauthorized connection, and how configure the routerto prevent such situations in the future. And for those who prefer mobile solutions, we've prepared a review of the best apps for Android And iOS.
Important: If you rent a place to stay or use a corporate network, some methods may be restricted by your administrator. In this case, please contact your ISP or system administrator.
1. Checking via the router's web interface is a universal method
The most reliable and accurate way is to go to your router's control panel. This is where you'll see all active connections, including hidden devices that may not appear in mobile apps. The process is virtually the same for most models, but we'll cover the nuances for popular brands.
First, you need to access the admin panel. To do this:
- 🌐 Open any browser (Chrome, Firefox, Edge) and enter the router's IP address in the address bar. This is usually
192.168.0.1or192.168.1.1If these addresses don't work, look at the IP on the sticker on the back of the device. - 🔑 Enter your login and password (by default it is often
admin/admin, but if you changed them, use your data). - 🔍 Find the section with connected devices. It may have different names:
"DHCP Clients","Connected Devices",Local Area NetworkorClients.
Here's what the path to the list of devices for popular brands looks like:
| Router brand | Path to the menu | Notes |
|---|---|---|
| TP-Link | Basic → DHCP → DHCP Clients List |
In new models it may be in Advanced → Network → LAN |
| ASUS | Local Network → DHCP Server or Network map |
In the interface ASUSWRT there is a visual network diagram |
| Keenetic | Devices → Device List |
Shows even previously disabled devices |
| Zyxel | Network → Local Network → DHCP Clients |
You can filter by connection type (Wi-Fi/Ethernet) |
| MikroTik | IP → DHCP Server → Leases |
Requires knowledge RouterOS, the interface is more complicated |
In the list you will see:
- 📱 IP address devices (for example,
192.168.0.103) - 🔤 MAC address (unique identifier, looks like
00:1A:2B:3C:4D:5E) - 🖥️ Host name (what is the device called on the network, for example,
iPhone-XorSamsung-TV) - ⏱️ IP lease time (shows when the device is connected)
⚠️ Warning: If the list contains devices with unfamiliar MAC addresses or names likeandroid-123456,unknown,guest-PC— these are potential "outsiders." But first, check if they belong to your smart gadgets (lamps and robot vacuums often have obscure names).
Compare MAC address with your known gadgets|
Try to disable the device via the web interface|
Change Wi-Fi network password|
Enable MAC address filtering (if supported)-->
2. Mobile applications for monitoring Wi-Fi networks
If accessing your router settings is inconvenient or you frequently check your network, you can use specialized apps. They scan your local network and display all connected devices, sometimes with additional information (manufacturer, device type).
Here are the top 5 verified apps for Android And iOS:
- 📱 Fing (free, premium version available) — scans the network in 10 seconds, shows open ports, and can block devices (on some routers). Available on Android And iOS.
- 🛡️ NetCut (shareware) - not only shows devices, but can also disconnect them from the network (requires root on Android). Doesn't work on all routers.
- 🔍 WiFi Analyzer (free) - in addition to the list of devices, it analyzes signal strength and channel load. Only for Android.
- 📊 Network Scanner (free) - a simple scanner with data export to CSV. There are versions for iOS And Android.
- 🔗 IP Tools (free) – a comprehensive application with ping, traceroute, and network scanning. Available on both platforms.
How to use such applications:
- Download and install the application from the official store (Google Play or App Store).
- Connect to your Wi-Fi network.
- Start the scan (usually the button
"Scan"orNetwork Analysis). - Wait for the process to complete (may take from 5 to 30 seconds).
- Review the list of devices. Apps often suggest the manufacturer by MAC address (for example,
Apple IncorSamsung Electronics).
⚠️ Note: Some applications (eg. NetCut) may be detected by antivirus software as potentially dangerous due to their ARP spoofing capabilities. Use them at your own risk, especially on corporate networks.
Advantages of mobile applications:
- ✅ No need to remember the router's IP address and login/password.
- ✅ You can check the network remotely (if you are on the same local network).
- ✅ Often show more information than the web interface (for example, the device model).
Flaws:
- ❌ Devices connected via cable (Ethernet) may not be visible.
- ❌ Some features (such as blocking) do not work on all routers.
- ❌ Free versions often display ads.
3. Windows Command Prompt: For Advanced Users
If you prefer to work without additional programs, you can check the connected devices via command line V WindowsThis method is suitable for advanced users and provides complete control over network analysis.
Here are the step-by-step instructions:
- Click
Win + R, entercmdand pressEnter(or search for "Command Prompt" in the Start menu). - Enter the command to view the ARP table (it contains the mapping of IP and MAC addresses):
arp -a - You will see a list of IP addresses and their corresponding MAC addresses. For example:
192.168.0.102 00-1a-2b-3c-4d-5e dyn - To get more information about a specific IP, use:
ping 192.168.0.102nslookup 192.168.0.102
For a more detailed analysis, you can use the command net view, but it only works in local networks with the protocol enabled SMB:
net view
If you need to save the scan results to a file for further analysis:
arp -a > wifi_devices.txt
notepad wifi_devices.txt
⚠️ Attention: Teamsarp -aAndnet viewOnly devices that have recently communicated with your computer are shown. For a complete list, it's best to use specialized utilities like Advanced IP Scanner or Angry IP Scanner.
For users Linux or macOS similar commands:
- 🐧 In Linux (terminal):
ip neighnmap -sn 192.168.0.0/24 - 🍎 In macOS (terminal):
arp -anetstat -r
How to decode a MAC address to determine the manufacturer
The first six characters of a MAC address (e.g., 00:1A:2B) identify the device manufacturer. You can find the brand name of a prefix on the IEEE website or by searching for "MAC vendor lookup." For example, the prefix 3C:5A:B4 belongs to Google (devices like Nest and Chromecast), while 78:31:C1 belongs to Apple.
4. Advanced network scanners for PC
If you need to not only see a list of devices, but also analyze their activity, traffic or open ports, specialized programs will come in handy Windows, macOS And LinuxThey are suitable for diagnosing network problems or finding vulnerabilities.
Top 3 programs for deep analysis:
- 🔭 Advanced IP Scanner (for free, Windows) — scans the local network, displays IP, MAC address, manufacturer, and open ports. It can remotely shut down computers (if allowed in network settings).
- 🛡️ Wireshark (free, cross-platform) - a professional packet analyzer. Shows all traffic online, but requires some skills. Suitable for detecting suspicious activity.
- 📊 SoftPerfect Network Scanner (free/paid, Windows/macOS/Linux) — scans the network, checks the availability of devices, displays shared resources, and can even remotely control computers.
Sample report Advanced IP Scanner:
| IP address | MAC address | Manufacturer | Host name | Status |
|---|---|---|---|---|
192.168.0.1 |
00:11:22:33:44:55 |
TP-Link Technologies | router.asus.com |
🟢 Online |
192.168.0.101 |
A4:83:E7:12:F5:89 |
Apple Inc. | iPhone-X |
🟢 Online |
192.168.0.105 |
78:31:C1:AB:CD:EF |
Unknown | android-123456 |
⚠️ Suspicious |
How to interpret the results:
- 🟢 Green status — the device is active and responding to requests.
- 🟡 Yellow status - the device may be disabled or block scanning.
- ⚠️ Unknown manufacturer — it’s worth checking whether the device is suspicious.
- 🔴 Open ports (e.g. 22, 3389, 8080) - may indicate vulnerabilities or unauthorized access.
⚠️ Attention: Programs like Wireshark can record all data packages, including passwords and personal information if they are transmitted in cleartext. Avoid using them on public networks (cafes, airports) unless absolutely necessary, as this may violate privacy laws.
5. How to distinguish your devices from others
Finding a list of connected devices is only half the battle. The key is to figure out which ones belong to you and which ones are potential "hackers." Here's the checklist:
Step 1: Make a list of your gadgets
- 📱 Smartphones, tablets, laptops (check names in Wi-Fi settings).
- 🖥️ Desktop computers, game consoles (PlayStation, Xbox).
- 💡 Smart lamps, sockets, thermostats (for example, Xiaomi, Philips Hue).
- 📺 TVs, media players (Apple TV, NVIDIA Shield).
- 🖨️ Printers, scanners, NAS servers.
Step 2: Compare MAC addresses
Each device has a unique MAC address. It can be found:
- On the sticker on the back of the router/device.
- In the gadget's network settings:
- 📱 Android:
Settings → About phone → General information → Wi-Fi MAC address - 🍎 iPhone:
Settings → General → About → Wi-Fi Address - 🖥️ Windows: run in command line
ipconfig /alland find the linePhysical address
- 📱 Android:
Step 3: Check for unknown devices
If the list contains gadgets with unfamiliar MAC addresses or names:
- 🔍 Check the first 6 characters of your MAC address MAC Vendors Lookup (For example,
28:CF:DAbelongs Apple,B8:27:EB— Raspberry Pi). - ⏱️ Check the connection time. If the device appears at night or when you're away, it's suspicious.
- 📶 Check the signal strength. If the device is connected via Wi-Fi and shows a weak signal, it may be located outside your apartment.
Step 4. Actions upon detection of strangers
- 🔒 Change your Wi-Fi password complex (at least 12 characters, with numbers and special characters).
- 🔄 Enable MAC filtering (in the router settings, add only your devices to the white list).
- 🛡️ Disable WPS - This function often has vulnerabilities.
- 🔄 Update your router firmware — Manufacturers regularly patch security holes.
How to Whitelist MAC Addresses on a TP-Link Router
1. Log into your router's web interface.
2. Go to Wireless → Wireless MAC Filtering.
3. Select the mode Allow (allow only specified MACs).
4. Add the MAC addresses of your devices.
5. Save the settings and reboot the router.
6. How to prevent unauthorized access in the future
Finding a Wi-Fi thief is good, but even better protect in advance your network. Here are proven methods:
1. Setting up Wi-Fi security
- 🔐 Use WPA3 (or at least WPA2-PSK) instead of the outdated one
WEPorWPA. - 🔑 Set a complex password (example:
k7#pL9!vR2$qM4). Do not use birth dates or simple words. - 🔄 Turn it off
WPS- This function can be hacked in a few hours.
2. Additional protective measures
- 🌐 Hide network name (
SSID) - disable broadcasting in the router settingsSSIDThen your network won't be visible in the list of available ones, but you can connect if you know the name. - 🕒 Set a Wi-Fi schedule — turn off the network at night or when you're away.
- 📡 Create a guest network — for friends or smart devices with limited access to the main network.
3. Regular monitoring
- 📅 Check the list of devices once every 1-2 months.
- 🔄 Update your router firmware (there is a section in the settings
Firmware Update). - 📱 Install a monitoring app (e.g. Fing) and set up notifications about new devices.
4. Advanced settings (for experienced users)
- 🔧 Set up
VLAN— divide the network into virtual segments (for example, for smart devices and basic gadgets). - 🛡️ Turn on
Firewallon the router and block suspicious IPs. - 🔗 Use
VPNfor remote access to your home network instead of opening ports.
⚠️ Note: Some providers block changes to router settings (for example, on "smart Wi-Fi" plans). If you can't change your password or encryption type, contact support—they may offer alternative security measures.
7. Common mistakes and how to avoid them
When scanning devices on the network, many users make common mistakes that can lead to false positives or, conversely, missed real threats. Let's look at the most common ones:
Mistake 1: Ignoring smart devices
Many people forget that Wi-Fi is connected not only to smartphones and laptops, but also to:
- 💡 Smart bulbs (Yeelight, Philips Hue).
- 🤖 Robot vacuum cleaners (Xiaomi, Roborock).
- 📹 IP cameras and video intercoms.
- 🎮 Game consoles in sleep mode.
These devices often have non-obvious names (eg. esp_123456) and may be mistaken for someone else's.
Error 2: Incorrect interpretation of MAC addresses
Not everyone knows that:
- MAC addresses can be spoofed.
- One manufacturer can have many prefixes (for example, Samsung there are more than 100 of them).
- Some devices (such as virtual machines) generate random MAC addresses.
Mistake 3: Using untrusted applications
Be careful with programs that promise:
- 🚫 "Hack any Wi-Fi" is a scam.
- 🚫 "Show passwords for all networks" - these apps often contain viruses.
- 🚫 "Increasing internet speed by 10 times" is impossible without changing your plan.
Download software only from official stores (Google Play, App Store) and check reviews.
Mistake 4: Neglecting Updates
Outdated router firmware is one of the main causes of hacking. For example:
- A vulnerability was discovered in 2021
CVE-2021-20090in routers TP-Link, which allows remote code execution. - In 2022, hackers exploited a flaw in D-Link DIR-865L to create botnets.
Solution: Enable automatic firmware updates in your router settings.
Mistake 5: Using default passwords
Many people leave the default passwords like admin or 12345678Hackers know these combinations and check them first. Here are examples of standard passwords for popular routers:
| Brand | Default login | Default password |
|---|---|---|
| TP-Link | admin |
admin |
| ASUS | admin |
admin |
| Zyxel Keenetic | admin |
1234 |
| D-Link | admin |
(empty) |
If you have never changed this data, do it right now!
FAQ: Answers to Frequently Asked Questions
Is it possible to find out what websites a connected device visits?
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 data packets (requires administrator rights).
- Some providers (eg Rostelecom) provide statistics on visited websites in your personal account.
⚠️ Warning: Intercepting traffic without user consent may violate privacy laws (for example, Article 138 of the Russian Criminal Code, "Violation of the secrecy of correspondence").
What should I do if my router doesn't show a list of connected devices?
Possible causes and solutions:
- 🔌 DHCP server is disabled - check the settings in the section
LANorDHCP. - 🔄 Outdated firmware — update the router software via the web interface.