Most people never think about their IP address — until a page won't load, the connection keeps dropping, or the remote-work system refuses to let them in. That's usually when they go looking for their public IP.
Checking it isn't complicated. A free online IP lookup tool shows the exit address your network is currently using as soon as the page opens, along with its location, ISP, and related details.
If you want to understand how the connection is actually behaving, you can go further and check IP quality, DNS resolution, and your browser environment.

The simplest way to find your public IP is an online tool. Nothing to install on your computer.
Open ToDetect, go to the IP check page, and let the results load. You'll see the IP address your current connection is using. When you read the results, these are the fields worth noting:
• Public IP address: the exit address used when you reached the test site.
• IP location: the country, region, and city recorded in the IP database.
• ISP and ASN: shows which network provider and autonomous system the address belongs to.
• IPv4 vs. IPv6: confirms which internet protocol your current connection is using.
• IP quality: the address type and any related risk records, based on the tool's data.
If all you want is your public IP, the first item is enough. When something is actually wrong with the network, bring in the other results to troubleshoot.
Keep in mind that the page shows the exit IP used to reach that particular site. If your computer is connected to more than one network, or different apps use different connections, the results can differ.
Plenty of people check their IP for the first time and find that the address on their computer has nothing to do with the online result.
For example, open Command Prompt on a Windows machine, type ipconfig, and you may see something like 192.168.1.105. That's the LAN address your router handed out, and it's mainly used for communication inside your home or office.
Your public IP is the exit address that the other side's server sees when your device reaches the internet.
Not every device gets its own dedicated public IPv4 address, though. Some home broadband and mobile networks share addresses, so several devices may reach the internet through the same exit IP.
So a mismatch between your local IP and your public IP is normal. It doesn't mean anything is broken.
Use two different IP lookup tools and you may get two different addresses — sometimes even different locations. That doesn't mean a tool is broken. It usually comes down to protocol, connection type, or how your ISP assigns addresses.
| Situation | Likely cause | How to check |
|---|---|---|
| IPv4 and IPv6 addresses differ | The sites use different network protocols | Check the format — IPv4 is digits and dots, IPv6 contains colons |
| The IPv4 address changes between lookups | The connection reconnected, or your ISP reassigned the address | Check whether the network dropped and reconnected, then look it up again after a while |
| Phone and computer show different IPs | One is on mobile data, the other on home broadband | Connect both devices to the same Wi-Fi and test again |
| The IP location differs | IP databases update on different schedules, or your ISP uses a regional exit node | Compare the ISP, the ASN, and results from several tools |
| The same device shows a different IP on a different network | Each network has its own internet exit | Record the public IP before and after switching networks, then compare |
If two lookups disagree, first confirm whether you're on IPv4 or IPv6, then check whether the connection changed. For location differences, don't treat a different city name as a network fault — cross-check the ISP and ASN details instead.
The city an IP lookup shows isn't necessarily the city you're in.
You might be in a smaller prefecture-level city and get the provincial capital instead. That can happen when your ISP routes traffic through a regional exit node, or when the IP location database hasn't caught up yet.
IP location is an estimate based on a database. It can't pinpoint a device the way phone GPS can.
So when you read the results, check the country, region, and ISP first. Don't conclude there's a network problem just because the city name is different.
If several tools disagree, use the ASN and ISP details to narrow it down.
It depends on what you're doing. If you just need to fill in remote-connection details, or confirm whether your exit address has changed, a basic lookup is usually enough.
If you're troubleshooting a site that won't open or a connection that keeps dropping, go further and check the IP quality results in ToDetect.
An IP quality check typically covers address type, the network it belongs to, abuse history, and related database records. Tools pull from different sources and score differently, so treat the score as a reference — it can't tell you on its own whether a network is healthy.
You can also run a DNS leak test to see whether domain lookups go through the DNS servers you expect.
Browser fingerprinting, meanwhile, shows environment details such as browser language, time zone, screen resolution, and WebGL. That tells you what your browser is handing to websites — but a difference in those parameters doesn't automatically explain an access problem.
When you're troubleshooting for real, pick the tests that match the problem. There's no need to run everything every time.
Yes. Some home broadband plans use dynamic assignment, so your public IP may change after a reconnect or an ISP configuration change. That said, restarting your router doesn't guarantee a new address.
If your phone is on mobile data and your computer is on home broadband, they use different exits. Put both on the same Wi-Fi and the results will likely match.
A basic public IP lookup doesn't require one — just open a site that offers it. For specific features and limits, check that site's own documentation.
Sites use different IP databases, weigh different factors, and refresh on different schedules, so the same address can score differently. Read the individual findings rather than comparing the numbers alone.
A free online IP lookup is the most direct way to see your current exit address. For everyday use, confirming your public IP, whether it's IPv4 or IPv6, plus the location and ISP, covers the basics.
If you need to dig into a network problem, use ToDetect to check IP quality, DNS leaks, and browser fingerprinting together.
The point of a public IP lookup isn't to run as many tests as possible. Find the exit address your network is using, then decide which additional details actually answer your question.
Efficiently solve multi-account management, environment isolation, and account security