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IP address check

This one tool asks this site’s own server once, because a browser cannot see its own public IP. The server uses the address to build the answer and does not store it or pass it to anyone else (every destination is listed on “What is sent”). Everything in the lower panel is read on your device and is not sent anywhere.

Shows the public IP address of the connection you are on, plus the country, region and time zone that can be read from it — kept separate from what your device reports about itself.

What the server saw

Checking…

Only this panel involves a request to this site. The address is not stored.

What your device reported

Device time zone
Language
Screen size
Browser string

This panel is read in the browser. The screen size, language and time zone are not sent anywhere. The browser string is the exception: it travels as a header on every request.

What the server sawIP address203.0.113.45FamilyIPv4Approximate areaJapan / TokyoTime zone (server)Asia/TokyoTime zone (device)Europe/LondonIf the two time zones disagree, you may be going through a VPN.
What the server saw, set beside what the device reported about itself. On the page proper these two are split into separate panels, so you can tell which facts actually left the machine.
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Why this one

No third-party IP service in the middle
The country and city come from information this site’s own edge already attaches to the request. There is no keyed third-party API involved, so your address is not handed anywhere else.
What left your device is kept separate
The top panel is what the server saw; the bottom panel is what your browser answered locally. The split tells you which facts travelled and which did not.
Time-zone mismatch is visible
The time zone implied by your IP sits next to the one your device is set to. A mismatch is the usual sign of a VPN or proxy — though travelling, or a hand-set clock, looks the same.

How to use it

  1. Open the page

    The lookup runs on load. There is nothing to press.

  2. Read the result

    You get the address, whether it is IPv4 or IPv6, and the country, region and time zone it maps to. “Copy” takes just the address.

  3. Check again after switching

    After connecting a VPN or changing network, press “Check again” to refresh.

Terms and how to read them

Public IP address
The address the internet sees you at. It is not the same as the private address your router hands each device (192.168.…): everything on one connection usually leaves through the same public address.
IPv4 and IPv6
The older and newer addressing schemes. On a connection that supports both, which one is used varies by destination. What you see here is the one used to fetch this page.
How accurate the location is
It follows your provider’s equipment, not you. The country is usually right; the city often is not. It cannot identify an address.
AS number and provider
The internet is a collection of networks that each decide their own routing, and an AS number identifies one of them. Which AS your address belongs to tells you who actually carries your traffic. Seeing a different company from the one you pay is normal — it means your provider leases capacity from theirs.
Does the address change?
On most consumer connections, yes. Restarting the router, or the provider renewing its lease, hands you a different address. Keeping one requires a static-address option on the contract. A value here that differs from yesterday is that, not a fault.
The device-side values
The lower half of the page is read straight from the browser without asking anything: time zone, language, screen size, and the browser’s own name (User-Agent) — four rows. Taken together those are enough to recognise a device again, which is how tracking without cookies (fingerprinting) works — which is the reason it is worth seeing what is readable.

Questions

Is my IP address stored?
No. It is read to build the response and nothing else. Worth knowing generally: every site you open receives your IP — the only unusual thing here is that this one shows it to you.
Can an IP address reveal my home address?
No. It reaches your provider and the rough area of their equipment. Even the city shown here is often wrong.
My phone and my computer show different addresses.
On the same Wi-Fi they should match. When they do not, the phone is usually on mobile data rather than Wi-Fi. The other cause is IPv6, where each device gets its own address, so two devices on one connection legitimately differ.
Can I hide my IP address?
A VPN or proxy means the destination sees the provider’s address instead of yours. You are hidden from the destination only — the VPN provider still knows your real address. It changes who can see it rather than making it invisible.
Is it safe to show this screen to someone?
Think twice on a shared screen. An address does not reveal where you live, but it does reveal your provider and roughly where you are. On a livestream that goes to everyone watching, and it stays in recordings and screenshots.
Can it tell whether I am on a VPN?
Not for certain. A mismatch between the IP time zone and your device time zone makes a VPN or proxy likely, but being abroad — or a manually set clock — produces the same result.
It says the lookup failed.
Blockers and workplace filters sometimes stop the request. Try another network or pause the extension. The lower panel still works without the lookup.
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