Your IP address changes based on how your internet connection works

Your IP address is a number that identifies your device on the internet, like a mailing address for data. Whether it changes depends on what type of connection you have and how your internet service provider assigns addresses.

If you have a home internet connection, your IP address usually stays the same for weeks or months at a time — but not forever. Your provider assigns you a temporary address that eventually expires and gets reassigned. If you use mobile data, your IP address changes much more often, sometimes every time you connect to a new cell tower or WiFi network. The difference comes down to how each system is designed to manage the limited pool of available addresses.

Key Takeaways

  • Home internet IP addresses typically remain stable for months but are temporary assignments that eventually expire and change.
  • Mobile devices and WiFi connections change IP addresses more frequently, sometimes multiple times per day depending on which network you connect to.
  • Your provider controls when your home IP address renews; you cannot prevent the change, but you can request a static address if your provider offers one.
  • Restarting your modem or router may change your IP address when ready, though this is not may provide.
  • Websites and services can see your IP address, but changing it does not erase your browsing history or account activity with those services.

How home internet IP addresses work

When you sign up for home internet, your provider assigns your modem an IP address using a system called DHCP (Dynamic Host Configuration Protocol). This address is not permanent — it comes with an expiration date, usually between 24 hours and several months depending on your provider's settings. When the lease expires, your provider assigns a new address, often the same one you had before, but not always.

Most home internet users get a new IP address every 30 to 90 days, though some providers set longer or shorter periods. You will not notice this happening because it occurs in the background. Your internet keeps working, your devices stay connected, and the change is invisible to you. The only way you would know is if you checked your IP address before and after the renewal date.

If you need an IP address that never changes — for example, to run a server or access your home security camera from outside — you can ask your provider about a static IP address. This is a permanent assignment that does not expire. Most providers charge extra for this service, usually between $5 and $15 per month, and not all providers offer it.

Why mobile and WiFi IP addresses change more often

When you use mobile data, your phone connects to your carrier's network through different cell towers depending on where you are. Each tower may assign you a different IP address, so your address can change multiple times in a single day as you move around the city. This happens automatically and you have no control over it.

WiFi networks work similarly. When you connect to a coffee shop's WiFi, you get an IP address from that network. When you leave and connect to a different WiFi network, you get a different address. Even at home, if you disconnect from your WiFi and reconnect, you might get a new address — though often the router assigns you the same one you had before.

The reason mobile and WiFi change so frequently is that these networks need to manage addresses for thousands of temporary users. A cell tower cannot assign permanent addresses to every phone that passes through it, so it hands out temporary ones that expire after a few minutes or hours of inactivity.

What happens when you restart your modem or router

Restarting your modem or router may change your IP address, but it is not may provide. When you power off your modem, it loses its current IP address lease. When you power it back on, it requests a new address from your provider. Your provider may assign the same address you had before, or it may assign a different one — there is no way to predict which.

If you restart your router (the device that broadcasts WiFi in your home) without restarting the modem, your home IP address usually stays the same because the modem is still connected to your provider. Only the devices connected to your router might get new local addresses, which is different from your public IP address that the internet sees.

Some people restart their modem hoping to change their IP address for privacy reasons, but this is unreliable. If you need a different IP address, a VPN (virtual private network) is a more direct approach — it masks your real IP address and shows websites a different one.

How to check your current IP address

To see your home IP address, open a web browser and search for "what is my IP" or visit a site like whatismyipaddress.com. The page will display your public IP address — the one your internet provider assigned to your modem. This is the address that websites and online services see when you visit them.

On a phone or tablet, you can check the same way using a browser, or you can go into your device settings to see your local IP address (the address your home router assigned to that specific device). The local address starts with 192.168 or 10.0 and is different from your public IP address.

Why websites and services track your IP address

Websites record your IP address in their logs every time you visit. This helps them detect fraud, manage server load, and understand where their traffic comes from. If you log into an account from a new IP address, some services may ask you to verify your identity or flag the login as unusual.

Changing your IP address does not erase your browsing history or account activity with those services. If you log into your email, social media, or banking account, the service knows it is you based on your login credentials, not your IP address. Changing your IP address will not log you out or hide your account activity from the service.

If you want to browse without your real IP address being recorded, a VPN masks your address by routing your traffic through a different server. However, this does not make you anonymous — the VPN provider can still see your activity, and websites can still identify you if you log into an account.

When your IP address might change unexpectedly

Your home IP address can change without warning if your modem loses power, if your internet connection drops and reconnects, or if your provider performs maintenance on their network. Power outages, unplugged cables, or service interruptions can all trigger a new address assignment.

If you run a service that depends on a fixed IP address — such as a home server, security camera system, or remote access setup — these unexpected changes can break your connection. This is the main reason people request static IP addresses from their providers. A static address costs extra but guarantees your address will not change.

Frequently Asked Questions

Can I change my IP address myself?

You cannot directly change your home IP address — only your provider can do that. You can restart your modem to request a new address, but your provider may assign the same one back. If you want a different address when ready and reliably, use a VPN, which masks your real IP address with a different one.

Does changing my IP address hide my browsing history?

No. Your internet provider can still see all the websites you visit regardless of your IP address, because they control the connection itself. Websites you log into can still identify you by your account login. A VPN hides your activity from your provider but not from the websites you visit or from the VPN company itself.

How often does my IP address actually change?

Most home internet providers renew IP addresses every 30 to 90 days, though this varies by provider. Mobile devices and WiFi connections change much more frequently — sometimes multiple times per day. You can check your current IP address anytime by searching "what is my IP" in a web browser.

Will I lose internet access if my IP address changes?

No. When your IP address changes, your internet connection continues working normally. The change happens automatically in the background. You will only notice a problem if you have set up a service that depends on a specific IP address, such as remote access to a home camera or server.

What is the difference between my public IP and my local IP?

Your public IP address is assigned by your internet provider and is what websites see. Your local IP address is assigned by your home router to each device on your network and starts with 192.168 or 10.0. Only your public IP address changes based on your provider's renewal schedule; local addresses can change when devices reconnect to the router.