How Does a VPN Change Your IP Address?

A VPN changes the IP address websites see. Without one, sites see the public IP of your home, mobile or Wi-Fi network. With a VPN on, your traffic leaves through the VPN server, so sites see that server’s address instead. Your home network’s own address does not change, and the new address is only one signal sites can use.

Why does my IP address change when a VPN is on?

Without a VPN, traffic reaches a site through the internet connection you are using, so the site sees that network’s public address. With a VPN on, covered traffic travels through the VPN first and exits from a VPN server. The National Institute of Standards and Technology describes a VPN as a virtual network built over existing physical networks that can protect communications between networks or devices.

So the address changes because the exit point changed — not because your home router was reassigned a new number. Mistero VPN’s App Store listing puts it as: mask your IP address while the VPN is active.

How can I check my IP before and after connecting?

Use a before-and-after check on the same phone:

1. Open check your IP address with the VPN off. Note the IP, country and network.
2. Open Mistero VPN and connect.
3. Reload the IP page and compare the IP, country and network.
4. Disconnect the VPN, reload again, and confirm the original values return.

This tool also relies on your browser calling public IP lookup services, so the result reflects your actual network path. In most cases, with the VPN on you will see the VPN exit address. That confirms the route changed for traffic reaching that page; it does not prove every app or every packet is covered, and edge cases such as IPv6 or DNS behaviour can differ by network.

For the wider product picture, see what a VPN actually changes and what a VPN is.

Does a new IP make me anonymous?

No. Changing the network exit changes one piece of information a destination can see. It does not remove every other signal.

A browser can still store cookies. A service can still recognize an account after you sign in. Information entered into a form still reaches the service you submit it to. The Electronic Frontier Foundation’s guidance on choosing a VPN treats a VPN as a privacy tool for the connection path, not a guarantee of anonymity (EFF Surveillance Self-Defense).

A changed IP and an anonymous browsing session are not the same promise.

What does Mistero VPN do here?

Mistero VPN is built to mask your IP address while the VPN is active, using protocols such as WireGuard, OpenVPN or IKEv2 (App Store listing). In this article’s terms, that means choosing a VPN exit for covered traffic so sites see the server address instead of your network’s.

Next step: check your IP address, then explore Mistero VPN to see how the connection path fits the rest of the app.