What Is My IP? Public vs Private IP Explained (2026)

"What is my IP" is one of the most-searched phrases on the internet. The answer is easy: one line of text, a string of numbers and dots. What almost no one explains is what those numbers actually mean, why there are sometimes two of them, and what a stranger can learn about you from knowing yours.

This guide covers the whole picture. By the end you will know exactly what your IP address is, how it changes depending on where you are, and how to check it in one click.

What is an IP address?

An IP address is a number assigned to a device on a network, used as its address for sending and receiving data. When you open a website, your device puts its IP address in the request so the server knows where to send the response. Every packet of data on the internet carries a source IP and a destination IP, like a letter with a return address.

The word "IP" stands for Internet Protocol, the rules that govern how those packets get from one place to another. An IP address is just the address portion of those rules, but the two terms are used interchangeably in casual conversation.

An IP address is not tied to you as a person. It is tied to the device or the network the device is on. Change networks, go from home WiFi to mobile data, and your IP address changes. Turn off your router, plug it back in, and your ISP may assign a new one.

IPv4 vs IPv6: why there are two formats

The original IP system, IPv4, was designed in the 1970s and could support about 4.3 billion addresses. That seemed impossibly large at the time. It was exhausted in 2011.

IPv6 fixes that. It uses 128 bits instead of 32, allowing roughly 340 undecillion addresses, enough to give every atom on Earth its own IP without running out. Deployment has been slow but is now mostly complete on major ISPs and cloud providers.

If you are on a modern mobile network or a newer fibre connection, your public IP is likely IPv6. If you are on an older home broadband connection, it is probably IPv4, or an IPv4 address that your ISP shares with hundreds of other customers via a technique called CGNAT (Carrier-Grade NAT).

Public IP vs private IP: the distinction that confuses everyone

Every device on your home network has its own IP address, something like 192.168.1.5. That is a private IP. It only exists inside your home. The outside world never sees it.

What the outside world sees is your public IP, a completely different number, assigned by your ISP to your router. Every device on your home network appears as that single public IP when talking to the internet.

This is why "what is my IP" tools always show the same result on every device in your house, but a different result on your phone when it is on mobile data. The tool is answering a different question: what IP does the outside world see for me, right now?

• Private IP ranges (never on the public internet): 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, 192.168.0.0 to 192.168.255.255, and 169.254.x.x (link-local).
• Public IP: anything else. Globally routable, owned by an ISP or hosting provider, registered in public databases.

How to check your IP address

The easiest way is a one-click lookup tool. Open the page and your public IP appears immediately, along with the country, city, ISP and timezone associated with it.

If you want to see your private IP (the one your router assigned to your device), the method depends on your system:

1. Windows: open Command Prompt and run ipconfig. Look for "IPv4 Address" under your active network adapter.
2. macOS: open System Settings, Network, Wi-Fi, Details. The IP address is listed under TCP/IP.
3. iPhone: Settings, Wi-Fi, tap the (i) next to your network. The IP address is under "IPV4 ADDRESS".
4. Android: Settings, Network & Internet, Wi-Fi, tap the connected network, Advanced. The IP address is listed there.
5. Linux: run ip addr show in a terminal. Look for "inet" lines. The 192.168.x.x or 10.x.x.x one is your private IP.

What your IP address actually reveals about you

This is where most articles either oversell the risk or dismiss it entirely. The truth is somewhere in the middle.

What a stranger can see

• Your approximate country and region, usually correct.
• Your city, often correct for home broadband, almost always wrong for mobile networks and VPNs.
• Your ISP, usually the name of whoever you pay for internet.
• The autonomous system number (ASN), an identifier for the network operator.
• The timezone your ISP is registered in, not necessarily the timezone you are actually in.
• Whether you are on a VPN (some commercial IP databases flag "VPN or proxy" as a category).

What a stranger cannot see

• Your name, address or phone number.
• Your exact physical location. IP geolocation is not GPS. It maps the address to where the ISP registered the range, which can be hundreds of kilometres off.
• Your browsing history. No website can see what other websites you visited.
• What files are on your device.
• Which device you are using. Only the network sees that, and even then only for traffic it handles.

To identify a specific person from an IP address, you would need a court order served on the ISP. The ISP keeps logs (for a period defined by local law) mapping IP-to-customer at particular times. No public tool has access to those logs. Anyone claiming otherwise is lying.

How VPNs and proxies change your IP

A VPN replaces your public IP with the IP of the VPN server you are connected to. Websites you visit see that VPN IP, not your real one. That is the entire point.

The most common question people ask: why does my IP not change when I connect to a VPN? Three reasons, in order of likelihood:

1. Split tunneling. Your VPN is configured to only route certain apps (usually a browser extension), and the request you are testing with is going around the tunnel. Check the VPN settings for "split tunneling" or "app exclusions" and make sure your browser is inside the tunnel.
2. IPv6 leak. Your VPN only routes IPv4 traffic. If the site you are testing is reachable over IPv6, the request goes straight out your real IPv6 address, bypassing the tunnel. Disable IPv6 on your device or enable it in the VPN settings.
3. The tunnel is not actually up. Some VPN clients show "Connected" in the UI without having established the tunnel. Restart the VPN client and check with the provider's own IP-check page.

A special case: mobile networks

When you are on 4G or 5G, your IP address belongs to your carrier, not to you. Carriers route all subscriber traffic through data centres in major cities, often just two or three per country. Two people on the same carrier in the same country may have the same public IP, and it may rotate every few minutes as they use different towers.

This makes mobile IPs almost useless for pinpointing location, and it also means mobile IPs are frequently flagged by anti-fraud systems, since they are shared among thousands of users.

Common reasons to check your IP address

• Remote access. You need to whitelist yourself on a server or router that restricts access by IP.
• Troubleshooting. A colleague has connectivity issues and you need to know which ISP they are on.
• Verify a VPN. You want to confirm the VPN is actually changing your IP and not leaking.
• Security investigation. You have log entries from an unknown IP and want to know where it came from.
• Game server diagnosis. A game server is high-ping and you want to see where it is physically located.
• Verify a hosting provider. You are choosing a web host and want to see if their servers are actually in the country they advertise.

Can you change your IP address?

Yes, in three ways, each with different tradeoffs:

• Restart your router. Most consumer ISPs assign a new IP on reconnection. Wait 5 to 10 minutes before plugging it back in. Sometimes this does nothing if the ISP's lease is long.
• Connect to a VPN. Replaces your public IP instantly. Free VPNs are slow and often sell your data; paid VPNs are usually the right answer if privacy is the goal.
• Use a proxy for specific apps. A browser-based proxy or SOCKS5 proxy changes the IP for the traffic that uses it, without affecting the whole device.

A VPN is the only reliable way to change your IP on demand without turning off your internet. Everything else is best-effort.

Do you need to hide your IP address?

For most people, most of the time, no. Your IP is not sensitive personal information in the way that your name or credit card number is. Every website you visit already has it. That is how the internet works.

Reasons it might matter:

• You live in a country with internet surveillance and want to avoid identification.
• You are on a public WiFi network and want to keep your traffic off the local operator's radar.
• You want to access a service that is geo-blocked in your country.
• You are a journalist or researcher protecting a source.
• You are running a business and want to appear as if you are in a different region for testing.

For everyone else, people browsing the news, checking email, shopping, your IP is not something you need to actively protect. Just do not type it into random websites that ask for it, since it is not something a legitimate service ever needs you to volunteer.