How to Look Up an IP Address (and What You’ll Find)

October 17, 2026 • NOFYI Editorial Team

An IP address is one of those things most people use every day without thinking about it. Every device that connects to the internet needs one, and every website you visit has one too. When a page loads slowly, when a service asks where you are, or when a friend asks for help with a router, an IP address is often part of the story. Learning how to look up an IP address, and understanding what the result does and does not show, can help you troubleshoot problems, protect your privacy, and avoid jumping to conclusions.

This guide explains what an IP address is, how to find your own public address, how to look up the address for a website, and how to interpret a lookup result. It includes a worked example, explains why a result usually shows a city rather than an exact street address, and explains how a VPN or proxy changes what other people see. It also explains why you should not share your IP address publicly.

What an IP Address Is

An IP address, short for Internet Protocol address, is a numeric label assigned to a device on a network. It serves two main purposes. First, it identifies the device or network on that network. Second, it provides a location for routing, so that data can travel from one place to another and back again. Without an address, a reply could not find its way home.

There are two main versions in use. IPv4 addresses are written as four groups of numbers separated by dots, such as 93.184.216.34. IPv6 addresses are longer and are written in hexadecimal groups separated by colons. IPv6 was introduced because the supply of IPv4 addresses is limited, and modern networks need many more addresses for phones, computers, smart devices, and servers. Many networks now support both versions, and a device may have one address of each type.

It is also useful to know the difference between a public and a private IP address. A private address is used inside a home or office network, for example to identify a laptop, a printer, or a phone on a local router. A public address is the address that the wider internet sees when traffic leaves that network. In most homes, many devices share one public address through the router. That is why a lookup of a home connection usually points to the household or the provider, not to one specific phone or laptop.

How to Look Up an IP Address

The method depends on whose address you want to find. Finding your own public IP address is different from finding the address of a website, and both are different from finding a private address on your local network. The sections below cover each case in turn.

To find your own public IP address, use a reputable IP lookup tool in your browser. Search for a phrase such as what is my IP, open a well-known tool or your search engine result, and it will show the public address that your connection is presenting to the internet. That address is the one websites and services see when you visit them. You can also use a site that shows both IPv4 and IPv6 results, which helps you see whether your connection supports both.

To find the IP address of a website, use a DNS lookup, which was covered in the companion guide to DNS records. Enter the domain name in a DNS lookup tool, choose A for IPv4 or AAAA for IPv6, and the result will list the addresses that the domain points to. You can also use command line tools such as ping, nslookup, dig, or host, depending on your operating system. A ping command, for example, will usually show the address it is trying to reach, although some networks block ping replies, so a missing reply does not always mean the address is wrong.

To find a private IP address on your own device, use your device settings. On Windows, you can check the network settings or run ipconfig in Command Prompt. On macOS and Linux, you can check the network settings or use a command such as ifconfig or ip addr in a terminal. On a phone, the Wi-Fi settings usually show the private address assigned by the router. These private addresses are useful for local troubleshooting, but they are not the address that the public internet sees.

What a Lookup Result Usually Shows

An IP lookup result usually includes several pieces of information. The first is the IP address itself. The second is the internet service provider, or ISP, that controls the address range. The ISP may be a large broadband provider, a mobile network, a hosting company, or a university network, depending on who owns the connection. The third is an approximate location, often at city level. The result may also show a region, a postal code area, a timezone, and the organisation that registered the address block.

That location information comes from a geolocation database. These databases map address ranges to the places where the provider has registered or routed them. They are updated regularly, but they are not exact. A database may place an address in the city where a provider has an office or a routing point, even if the person using the connection is in a nearby town. That is normal, and it is one reason you should treat location results as approximate.

A lookup may also show whether the address is associated with a hosting provider, a data centre, a VPN service, or a residential connection. That detail can be useful when you are trying to understand why a service treats traffic differently. For example, some streaming or banking services apply extra checks to traffic from data centres, because those addresses are more likely to be used by automated systems or shared services than by a single household.

Worked Example: Looking Up an Address

Suppose you want to check the public address for a website you manage, and also check what your own connection looks like. The steps below show a safe way to do that using only public information and your own connection. Do not use these steps to look up someone else private address, and do not post your own result in a public place.

First, open a DNS lookup tool and enter example.com. Choose the A record type. The tool will return one or more IPv4 addresses. Write down the address, the record type, and the time you checked. Next, choose the AAAA record type and note whether any IPv6 addresses are returned. This tells you which network versions the domain supports, and it gives you a concrete address to investigate further.

Next, take one of the IPv4 addresses from the DNS result and enter it into an IP lookup tool. The tool should show the organisation that controls the address and an approximate location. For a large example domain, the organisation is likely to be a hosting or content delivery provider rather than a single home user. Notice how the location is given as a city or region, not as a street address. That is the normal level of detail for a public IP lookup, and it is an important limit to understand.

Next, check your own public address in a separate browser tab, using a what is my IP tool. Compare the result with the website address. Your result should show your ISP and an approximate city. Notice that it does not show your name, your exact home address, or a list of the devices in your home. If you are using a VPN, the result will instead show the VPN provider and the location of the VPN server you are connected to. That contrast is a useful demonstration of how a VPN changes the public view of a connection.

Finally, compare the private address on your device with the public address from the tool. They will usually be different. The private address is for your local network, and the public address is what the internet sees. Keeping that distinction in mind prevents a common mistake: sharing a private address when someone asked for a public one, or assuming that a private address can be used to reach you from outside your home.

Why a Lookup Does Not Show an Exact Address

It is a common misunderstanding that an IP address reveals a precise home address. In practice, a normal public lookup does not. It shows an approximate location based on where the address block is registered or routed. That may be a city, a region, or a nearby large town. It does not show a street name, a house number, or the name of the person using the connection.

There are several reasons for this limit. First, many homes share one public address, so the address cannot identify one person in a household. Second, providers route traffic through equipment that may be in a different town from the customer. Third, geolocation databases are built from provider records, routing data, and other large-scale sources, not from a live map of every device. The result is a useful approximation, not a precise tracker.

Law enforcement and providers can, in some cases, link an address to a subscriber through their own records and with legal authority, but that is not something a public lookup tool can do. A stranger with only your IP address cannot normally learn your exact address from a public tool. That does not mean an IP address is harmless, as explained below, but it does mean the risk is different from the one often imagined.

How a VPN or Proxy Changes What Others See

A VPN, or virtual private network, routes your traffic through a server run by the VPN provider. When you use a VPN, websites and lookup tools see the VPN server address rather than your home public address. The location result will usually show the location of that VPN server, which may be in another city or country. A proxy works in a similar way for the traffic that passes through it, although the details depend on the type of proxy and how it is configured.

This change can be useful for privacy, because it hides your home public address from the sites you visit. It can also help when you are on a public Wi-Fi network, because the VPN encrypts traffic between your device and the VPN server. It does not, however, make you anonymous. The VPN provider can see your traffic, your account can still identify you to services where you are signed in, and websites can still use cookies and other signals to recognise you. A VPN changes one part of the picture, not the whole picture.

A proxy or VPN can also cause surprises. A service may think you are in another country and show different content, prices, or language. A bank or email provider may ask for extra verification because it sees an unfamiliar location. If a site suddenly behaves differently after you turn on a VPN, that is often the reason. Turning the VPN off, or choosing a server in your own country, usually restores the expected behaviour.

Limitations of IP Lookups

IP lookups have clear limits. They show a snapshot, not a permanent identity. Many public addresses change over time, because providers assign them dynamically. An address that belongs to one household today may belong to another household tomorrow. A lookup result can also be wrong or outdated if the geolocation database has not been updated after a provider changed its routing.

Lookups also cannot prove who is behind an address. A shared address may be used by many people, a hosting address may serve many websites, and a VPN address may be shared by many customers. If you see an address in a log file, treat it as a clue, not as proof of identity. Further checks, such as comparing timestamps, checking account activity, and contacting the provider through proper channels, are needed before drawing a conclusion.

Another limitation is that a lookup does not show what a device is doing. It cannot tell you which pages a person visited, what they typed, or what files they downloaded. It only shows the address, the provider, and an approximate location. Claims that an IP lookup reveals a full browsing history or a precise home address are misleading.

Do Not Share Your IP Address Publicly

Your IP address is not as sensitive as a password, but it is still worth protecting. Sharing it publicly, for example in a screenshot, a forum post, or a live stream, can expose your approximate location and your ISP. It can also make it easier for someone to target your connection with unwanted traffic, such as a denial-of-service attack, or to try to probe your router for weaknesses. It is safer to crop or blur an IP address before you share a screenshot.

If you need help with a network problem, share the address privately with a trusted support person or provider, and share only the part that is needed. For example, a support agent may need to know your public address to check a connection, but a public forum usually does not. If you accidentally share your address, you do not need to panic, but it is sensible to restart your router if your provider assigns a new address on reconnection, to check your router settings, and to avoid sharing it again.

Be especially careful with screenshots of speed tests, error messages, and game lobbies, because those often include an IP address in a corner of the screen. Before you post, look for strings of numbers separated by dots or colons, and remove them. That small habit protects your approximate location and reduces the chance that someone will target your connection.

Frequently Asked Questions

Can I look up someone else IP address?

You can look up the public address of a website or service, because that information is published in DNS. You should not try to obtain the private address of another person without their permission, and you should not use an address you find to harass, threaten, or target anyone. If you are troubleshooting a service you run, use the addresses in your own server logs and contact the relevant provider through proper channels.

Does an IP address show my exact home address?

No, a normal public lookup shows an approximate location, usually at city level, plus the ISP. It does not show a street address or the name of the person using the connection. The exact subscriber record, if one exists, is held by the provider and is not available through a public lookup tool.

Why does my IP address change?

Many providers assign addresses dynamically, which means your public address can change when you restart your router, when your lease expires, or when the provider rebalances its network. Some connections have a static address that rarely changes. Both setups are normal, and a change does not usually mean something is wrong.

Should I use a VPN to hide my IP address?

A VPN can hide your home public address from websites you visit, and it can add protection on public Wi-Fi. It does not make you anonymous, and it introduces a new provider that can see your traffic. Choose a reputable provider if you use one, understand its logging and privacy policy, and remember that you will still need strong passwords, updated software, and careful sharing habits.

Conclusion

An IP lookup is a useful tool when you understand what it can and cannot tell you. It can show a public address, an ISP, and an approximate city-level location. It cannot show an exact home address, a person name, or a browsing history. Use it to check your own connection, to troubleshoot a website, and to understand why a service sees you in a particular place. Keep your own address private, and treat any result as an approximation rather than a precise identity.