IP Address Lookup – Find Any IP's Location & ISP

Use the IP address lookup tool below to check any IPv4 or IPv6 address, or a domain name, and instantly see its approximate location, ISP, network, and hostname — by default it shows your own public IP.

What is an IP address?

An IP address (Internet Protocol address) is a unique numeric label assigned to every device that connects to a network. It works like a mailing address for the internet: when your computer, phone, or server sends a request, the IP address tells other machines where to send the reply. Without it, data would have no way to find its destination.

Every website, router, and connected gadget has at least one IP address. When people ask what is my IP, they usually mean their public IP — the single address that the rest of the internet sees on their behalf, assigned by their internet service provider.

IPv4 vs. IPv6: what is the difference?

There are two versions of the Internet Protocol in use today, and both are fully supported by this tool.

• IPv4 uses four numbers separated by dots, such as 192.0.2.14. It offers about 4.3 billion possible addresses — a total that the growth of the internet has effectively exhausted.
• IPv6 uses eight groups of hexadecimal characters separated by colons, such as 2001:0db8:85a3::8a2e:0370:7334. It provides a virtually unlimited pool of addresses and is designed to carry the internet into the future.

Many networks now run both protocols at once. You can see your addresses on our What Is My IPv4? and What Is My IPv6? pages.

What does an IP address reveal?

A public IP address carries more information than most people expect. When you run an IP address lookup, the results typically include:

• IP geolocation — the approximate city, region, and country tied to the address.
• ISP and organization — the internet service provider or company that owns the address.
• ASN — the Autonomous System Number, a unique identifier for the network that routes the traffic.
• Reverse DNS hostname — the domain name mapped back to the IP, which often hints at the provider or server role.

Together, these details paint a useful picture of where an address lives on the internet and who is responsible for it.

How accurate is IP geolocation?

IP location is an estimate, not a pinpoint. Geolocation databases map ranges of addresses to places based on registration records, network routing, and provider data. Because of this, the IP geolocation shown is approximate and often reflects the ISP's regional hub or data center rather than the user's actual home.

In practice, country-level accuracy is very high, city-level accuracy is good but imperfect, and an IP address never reveals a street address or a specific individual. Mobile networks, corporate VPNs, and satellite links can place a result hundreds of miles from the real user. Treat the location as a helpful clue, not a certainty.

Public vs. private IP addresses

It helps to know which kind of address you are looking at.

• A public IP address is visible to the whole internet and is the one this tool looks up. It is assigned by your ISP and shared by every device behind your router.
• A private IP address — such as 192.168.x.x or 10.x.x.x — is used only inside your local network. These addresses are not routable on the public internet and cannot be geolocated from outside.

Your router uses a process called NAT (Network Address Translation) to let many private devices share one public IP.

How to look up any IP address or domain

Using the tool is simple. When the page loads it detects and displays your own public IP automatically, so you can see what is my IP at a glance. To check something else, type any IPv4 or IPv6 address, or a domain name, into the search box and run the lookup. If you enter a domain, we resolve it to its IP first, then report the location, ISP, ASN, and hostname. For deeper record-level detail on a domain, try our DNS lookup.

Why do people look up an IP address?

There are many everyday reasons to run an IP address lookup:

• Troubleshooting a connection or confirming which IP your network is using.
• Security — investigating a suspicious login, email header, or server hitting your logs.
• Verifying a VPN or proxy is working by confirming your visible location has changed.
• Checking a server or website's hosting provider, region, and network before you rely on it.

Whatever your reason, IPAddress-Lookup.com gives you fast, clear answers with no signup required.

Frequently asked questions

What is my IP address?

Your IP address is the public label your internet provider assigns to your connection. This page detects it automatically and shows it at the top of the results, along with your approximate location, ISP, ASN, and hostname.

Can an IP address reveal my exact home address?

No. IP geolocation is approximate and usually points to your ISP's regional location or data center, not your home. An IP address never exposes your street address or your identity.

Can I look up a domain name instead of an IP?

Yes. Enter any domain name and the tool resolves it to its IP address first, then displays the same location, ISP, ASN, and reverse DNS details. For full DNS records, use our DNS lookup tool.

Does looking up an IP work for both IPv4 and IPv6?

Absolutely. IPAddress-Lookup.com supports both IPv4 and IPv6 addresses. Just paste either format into the search box and run the lookup to see the available details.

Why does my IP location look wrong?

Location results come from geolocation databases and can be off by design, especially on mobile networks, VPNs, or business connections. If you are using a VPN or proxy, the tool will show the server's location rather than yours — which is exactly how you can verify a VPN is working.