Two independent probes
We test from the edge location nearest to you and from our origin servers. A site is only called down when both fail.
Is it down,or is it just you?
Check any website in seconds from two independent locations. Clear answers, no account, no ads.
Recently checked websites
Live from visitors around the world. Only domain names are shown, never full addresses.
Built to give you a straight answer
Plain-language results
No jargon: you get a clear verdict, the HTTP status and what to do next.
Honest about protection
Sites that block bots are reported as protected, never wrongly as down.
Private by design
We never publish full addresses, paths or query strings. No account needed.
How a check works
Read the full explanationFind the server
We resolve the domain name (DNS) and refuse private or internal addresses.
Connect twice
Two separate locations open a secure connection, following redirects safely.
Read the answer
We read the HTTP status code and translate it into a clear result.
Guides
Understand outages, status codes and connection problems.
Why a Website Can Be Online but Not Work for You
A site can be up for the world and still fail on your device. Here are the five usual causes, from DNS cache to regional restrictions, and how to test each one.
How Does a Website Status Checker Work?
DNS, connections and HTTP status codes like 200, 404 and 500, explained for beginners — plus why good checkers stay transparent and limited.
What to Do When a Website Is Down
A calm, step-by-step plan for visitors waiting on an outage — and for owners whose own site just went offline.
Questions, answered
See all questionsHow does a website status checker work?
A website status checker tries to connect to a website's server and reads its response. A successful response, such as HTTP 200, usually means the website is available. A 404 response means the server is online but the requested page does not exist. A 500-level response means the server encountered an error. UpOrNot presents these results clearly so users can understand whether the issue is global or local to their own connection. Read the full guide.
Why does your tool say a website is “online” when I cannot open it?
Our tool checks the website's availability from our own infrastructure. If the website is online but unavailable to you, the issue may be related to your local cache, internet provider, network settings, or a geographic restriction. Testing from another network or, where lawful and appropriate, with a VPN can help determine whether location is a factor. Learn more.
Is the tool really free?
Yes. Website status checks are free and available without an account. We may receive a commission if you choose to use certain VPN links recommended in relevant guides, at no additional cost to you. See our affiliate disclosure.
Does checking a website slow it down or harm its SEO?
No. Our checks are lightweight and comparable to a normal automated web request. They are designed to avoid a meaningful impact on the website being checked.
How can I contact support?
Use our dedicated contact form. We aim to respond within 24 to 48 hours.