IP Lookup
Find information about an IP address, including its approximate location, network, ISP and ASN.
We don't store your IP lookup searches. Locations shown are approximate and may not represent an exact physical location.
IPv4 & IPv6 Check
See whether this device can connect using IPv4, IPv6, or both at the same time (called "dual-stack").
Browser Leak Test
Checks whether your browser reveals your real IP address outside a VPN or proxy, using a browser feature called WebRTC.
Free IP Address Lookup Tool
What is an IP address?
An IP address (Internet Protocol address) is a unique number assigned to every device connected to a network. It lets devices find and communicate with each other, much like a postal address routes mail to the right destination. There are two versions in common use today: IPv4, the older format written as four numbers separated by dots (e.g. 8.8.8.8), and IPv6, a newer, much larger address format written in hexadecimal groups (e.g. 2606:4700:4700::1111), created because the world was running out of available IPv4 addresses.
What information can an IP address reveal?
A public IP address can typically be linked to an approximate geographic area, the internet service provider (ISP) or organization it's registered to, and network details such as its Autonomous System Number (ASN). This information comes from public IP registry and geolocation databases, not from the device itself.
What an IP address cannot reliably reveal
IP geolocation is approximate by design. It generally cannot determine someone's exact home address, precise physical location, or personal identity. Accuracy typically ranges from country-level to city-level, and can be off by a considerable distance, especially on mobile networks or when a VPN is in use.
Public vs private IP addresses
A public IP address is visible on the internet and can be looked up by tools like this one. A private IP address is only used inside a local network, such as a home or office Wi-Fi, and is never directly reachable from the internet. Common private IPv4 ranges include:
- 10.0.0.0 – 10.255.255.255
- 172.16.0.0 – 172.31.255.255
- 192.168.0.0 – 192.168.255.255
What is IPv4?
IPv4 is the original addressing system of the internet, using a 32-bit format written as four numbers from 0–255 separated by dots. It supports around 4.3 billion unique addresses, which is no longer enough for the number of connected devices in use worldwide.
What is IPv6?
IPv6 is the newer addressing system designed to replace IPv4. It uses a 128-bit format, written as eight groups of hexadecimal digits, and supports an effectively unlimited number of unique addresses to accommodate the growing number of internet-connected devices.
What is an ASN?
An Autonomous System Number (ASN) identifies a network or group of networks under the control of a single organization, such as an ISP, hosting provider, or large company. ASNs are used by routers across the internet to determine how to route traffic efficiently between networks.
What is IP geolocation?
IP geolocation is the process of estimating the physical location associated with an IP address using public registry data and network databases. It is widely used for purposes such as content localization, fraud detection, and analytics, but it is an estimate rather than a precise measurement.
Can an IP address reveal my exact location?
No. IP-based geolocation provides an approximate location only, usually accurate to a city or region rather than a specific address. It should never be treated as a precise or guaranteed location for any individual device or person.
What is dual-stack (IPv4 + IPv6)?
A dual-stack connection is one where a device can use both IPv4 and IPv6 addresses at the same time. Most modern ISPs and devices support both, but this isn't guaranteed everywhere — the IPv4 & IPv6 Check above tests each one independently to show which your current connection actually supports.
What is a WebRTC leak?
WebRTC is a browser feature used for things like video calls, and it can sometimes reveal a device's real IP address directly to a website — bypassing a VPN or proxy that's supposed to hide it. The Browser Leak Test above checks for this using the same technique WebRTC itself uses, entirely inside your browser.
Frequently Asked Questions
Your IP address is the identifier your internet connection uses to communicate online. Click "Detect My IP" on this page to see your current public IP address instantly.
An IP address is a numerical label assigned to a device connected to a network. It allows devices to find and communicate with each other over the internet, similar to a postal address for data.
Yes. Enter any public IPv4 address, such as 8.8.8.8, into the lookup field to see its approximate location and network information.
Yes. This tool supports both IPv4 and IPv6 addresses. Simply paste a valid IPv6 address into the lookup field.
No. IP geolocation only provides an approximate location, typically accurate to the city or region level. It cannot reliably reveal a street address, exact coordinates, or someone's identity.
A public IP address is visible on the internet and can be looked up. A private IP address, such as 192.168.1.1, is only used inside a local network (like your home Wi-Fi) and cannot be geolocated from the outside.
An ASN, or Autonomous System Number, identifies a network or group of networks operated by a single organization, such as an ISP or large company, and is used to route traffic across the internet.
Yes. IP lookup data typically includes the internet service provider (ISP) or organization that the IP address is registered to.
Reverse DNS is a lookup that translates an IP address back into a hostname, such as dns.google for 8.8.8.8, when the network operator has configured one.
Yes. Tools such as a VPN or proxy can mask your real IP address by routing your traffic through a different server, though this is a separate topic from IP lookup itself.
Dual-stack means a device or network can use both IPv4 and IPv6 at the same time. Many modern networks support both, while some only support one — the IPv4 & IPv6 Check above shows you which apply to your current connection.
A WebRTC leak test checks whether a browser feature called WebRTC reveals your real IP address, even while you're connected to a VPN or proxy that's meant to hide it. It runs entirely in your browser and doesn't send anything to OntoEase.