Your public IP address
Looking up…
- Carrier
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- Approximate location
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- It is the carrier’s, not yours: the country is almost always right, the city only sometimes. With a VPN you will see the tunnel’s.
- Data centre that served you
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- The point of Cloudflare’s network closest to you, as an airport code.
- Connection
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- Browser language
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- Browser (user agent)
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How to use it
01
Open the page
Nothing to type: the address appears by itself as soon as it loads.
02
Copy it
A button puts it on the clipboard, ready to paste into an allow-list or a support ticket.
03
Read the rest
Carrier, approximate location, HTTP and TLS version: what any server sees of your connection.
What it is usually needed for
Almost always for an allow-list: an admin panel, a database or a company VPN that only accepts connections from known addresses, and someone in support asking for “your IP”. Also to check that a VPN is really on, to know whether your carrier already gives you IPv6, or to understand why a service shows you another country’s content.
Allow-lists are managed, not improvised
An internal system protected by IP works until someone works from home, the carrier changes the address or a new person joins. Then access is opened “for a moment” and stays open. When we build or maintain internal systems, access is solved with identity rather than addresses: who you are, not where you connect from.
Frequently asked questions
What is the difference between a public and a private IP?
The public one is assigned by your carrier and is how you reach the Internet: it is what any server sees and what this page shows. The private one is the one inside your network — 192.168.x.x or 10.x.x.x — and only exists between your device and the router. Several devices in your home or office share the same public IP.
Why does my IP change?
Because most carriers assign dynamic addresses: yours may change when the router restarts or every so often. Static IPs are a separate service, usually for businesses. If you need a system to recognise your connection by IP, ask your carrier whether yours is static.
IPv4 or IPv6?
IPv4 addresses are the four numbers separated by dots; they ran out and are now shared among several customers. IPv6 are the long ones with colons and letters: there are plenty and every device can have its own. If this page shows you IPv6, your connection has it and prefers it; servers that do not support it will see your IPv4.
How do they know my city?
From your carrier’s address block: each block is registered with a country and sometimes a region. The city comes from databases that map blocks to approximate areas, and they are often wrong: it is common to be placed in the capital or in the city where your carrier has its exchange.
Can I be located with my IP?
Not precisely. An IP tells the carrier and, with luck, the city; not your street or your house. Who can really link an IP to a person is your carrier, and only under a court order. What an IP does identify is a customer of that carrier at a given moment, which is why it shows up in access logs.
Do you store my IP?
No. Your browser asks our function on Cloudflare for the page, which replies with the IP and the connection data it already knows, and logs nothing. Cloudflare, like any CDN, keeps technical access logs under its own policy; we neither read nor store them.
What is the autonomous system?
An organisation’s address block, identified by a number: AS7922 is Comcast, AS13335 is Cloudflare. It tells you who manages the connection, usually the carrier. In an office it may be the company’s provider.
An internal system that only works from the office?
We modernise it so access depends on who you are rather than your IP, with access logs and without opening holes “for a moment”.
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