How to Find and Remove Unknown Devices From Your Home Network

An unknown device on your home network is not automatically an intruder, but it is worth checking. The fastest safe approach is to review the device list in your router or internet provider app, identify the device by its name, IP address, and MAC address, then remove access by changing your Wi-Fi password if you cannot confirm it belongs to you.

Start by avoiding a quick block. Phones, smart TVs, printers, cameras, streaming sticks, and smart-home hubs can appear under vague or unfamiliar names. A device may also use a randomized private MAC address, making it look new after an update or network setting change.

First, check whether the device is really unknown

Your router’s connected-device list may show a device name such as “Unknown,” “Espressif,” “Tuya,” or a manufacturer name instead of the product you recognize. That does not, by itself, mean someone is using your network.

Before removing anything, make a short list of every device in your home that could connect to Wi-Fi or Ethernet. Include devices that are easy to overlook:

• Phones, tablets, laptops, and work computers
• Smart TVs, streaming players, game consoles, and speakers
• Printers, Wi-Fi cameras, doorbells, and robot vacuums
• Smart plugs, thermostats, lights, appliances, and hubs
• Internet provider equipment, Wi-Fi extenders, mesh nodes, and Ethernet switches
• Guest devices belonging to roommates, family members, or visitors

Ask everyone in the household before taking action. A roommate’s work laptop, a child’s game console, or a recently installed smart device may be the answer.

How to find devices connected to your network

Most routers provide a connected-device list in a browser-based admin page or an internet provider’s mobile app. The wording varies, but look for Connected Devices, Device List, Clients, Network Map, or DHCP Clients.

To get there, open your router app or sign in to the router’s local administration page. The router label, setup guide, or provider support page may list the local address and sign-in instructions. Do not confuse this router sign-in password with your Wi-Fi password; they should be different.

For each entry, write down or take a screenshot of these details:

• Device name or hostname: Often useful, but not always accurate.
• Connection type: Wi-Fi or wired Ethernet. A wired device may be a mesh unit, TV, or switch.
• IP address: A local address, commonly beginning with 192.168, 10, or 172.16 through 172.31.
• MAC address: A hardware-style identifier made of letters and numbers, often shown in pairs separated by colons or hyphens.
• Last active time: Helpful for determining whether the device is currently communicating.

A MAC address can sometimes reveal the device maker through its first few characters, but treat that as a clue rather than proof. Modern phones and some other devices may use private or randomized MAC addresses for better privacy, particularly on Wi-Fi.

Ways to identify a suspicious device safely

Use a simple process that rules out your own devices without exposing your network or accidentally disconnecting something important.

1. Compare names and addresses on your own devices

On a phone, tablet, or computer, open its Wi-Fi or network details and compare its MAC address with the router list. The location of this setting differs by operating system. Look for labels such as Wi-Fi Address, Private Wi-Fi Address, Hardware Address, or Physical Address.

Keep in mind that a phone using a private Wi-Fi address may not show the same permanent hardware address listed elsewhere in its settings.

2. Turn off or disconnect known devices one at a time

This is often the most reliable method. Temporarily turn off Wi-Fi on a phone, unplug a streaming device, or power down a smart device. Refresh the router’s device list and see which entry disappears.

Work methodically and label confirmed entries in the router app if it allows custom names. Start with devices that are easy to reconnect. Avoid unplugging essential security, medical-support, or work equipment unless you know the effect of doing so.

3. Check for old entries

Some routers display devices that are no longer connected. Look at the “last seen” time or whether the entry is marked offline. An old phone or a visitor’s device may remain in the history until the router clears it.

4. Consider your network setup

If you use a separate modem, router, mesh system, extender, or provider gateway, each piece can have its own management screen and device list. A mesh satellite may show up as an unfamiliar wired or wireless client. In apartments, make sure you are viewing your own private network—not a shared building or managed community network.

How to remove an unknown device

If an entry remains unexplained, use the router’s controls to pause, block, or remove it. This may be called Block Device, Pause, Access Control, or MAC Filtering. Blocking can end its connection immediately, but it may not stop the device from reconnecting if it already knows your Wi-Fi password.

For a device you believe is unauthorized, changing your Wi-Fi password is the more dependable step:

1. Open the Wi-Fi security settings for your main network.
2. Create a new, unique passphrase that is long and not reused from another account. A memorable multiword passphrase is a practical choice.
3. Save the change. Your legitimate devices will disconnect.
4. Reconnect your own devices using the new password, beginning with your phone or computer and essential equipment.
5. Review the connected-device list again after everything has had time to reconnect.

A password change removes devices that only had access because they knew the old password. It will not fix a router with compromised administrator settings, so continue with the security checks below.

Secure the router after removing the device

Think of an unfamiliar device as a prompt to review your network basics. These steps reduce the chance of repeat access.

• Change the router administrator password. Do this especially if it is still the default printed on the device or known by a former roommate or resident.
• Install router firmware updates. Use the router app or admin page to check for updates. If updates are automatic, confirm that feature is enabled.
• Use current Wi-Fi security. Choose WPA3-Personal when all your devices support it, or WPA2-Personal with AES where WPA3 is unavailable. Avoid obsolete options such as WEP and WPA.
• Turn off WPS. Wi-Fi Protected Setup is convenient but unnecessary for most homes and can weaken access controls.
• Review remote management. Disable router administration from the internet unless you have a specific need for it and understand how it is secured.
• Use a guest network. Give visitors a separate guest password. If your router offers an isolated guest network, it can help keep guest devices separate from your personal computers and smart-home controls.

Changing your network name is optional. A new name can help you distinguish your network from an old configuration, but the password and router admin credentials are the more important protections.

Mistakes to avoid

• Do not rely on a device name alone. Names can be generic, missing, or manually changed.
• Do not permanently block entries before checking them. You could cut off a printer, camera, mesh node, or a household member’s device.
• Do not reuse an old Wi-Fi password. A familiar password may already be saved on devices you no longer control.
• Do not assume a hidden network name is security. Hiding an SSID does not replace strong encryption and a unique password.
• Do not use MAC filtering as your only defense. It can be useful for management, but MAC addresses can be changed and private addresses may rotate.

When a router reset or outside help makes sense

Consider a factory reset of the router if you cannot access its admin settings, suspect someone changed the settings, keep seeing unexplained devices after changing passwords, or find unfamiliar remote-management, port-forwarding, DNS, or administrator-account settings. A reset erases your configuration, so you will need to set up your network and reconnect devices afterward.

If the router is supplied and managed by your internet provider, contact the provider for help with account access, equipment replacement, or a reset. For a landlord-managed, building-wide, or shared network, do not attempt to alter equipment you do not administer. Report the concern to the person or organization responsible for the network instead.

FAQ

Why does my router show an “unknown” device?

Many routers cannot identify products accurately. The device may be a smart-home accessory, a recently updated phone using a private MAC address, a network extender, or an old offline entry. Confirm it before assuming unauthorized access.

Will blocking a device keep it off my Wi-Fi forever?

Not necessarily. A block may stop the current device identity, but a person who knows your password could try again. Change the Wi-Fi password and secure the router administrator account for stronger protection.

Can someone use my Wi-Fi without appearing on the device list?

A currently connected device should normally appear somewhere in the router’s client list, though the list can be delayed or split across router and mesh interfaces. Review both active and recently seen devices, then check again after a restart if needed.

The practical next step

Review the connected-device list, identify your own equipment by disconnecting it one at a time, and label the entries you confirm. If one still does not belong, block it, change the Wi-Fi password, change the router admin password, and update the router. That sequence handles both the immediate concern and the most common ways an unwanted device could return.