IPAddress-Lookup.com

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.

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.

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.

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.

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.