Quick Status Check
Results in Under 2 Seconds
We send an HTTP request to the site and measure the response time, so you know immediately if there's an outage.
Checks from AWS US-East
Our backend runs on AWS Lambda in us-east-1. If the site responds to us but not to you, the issue is on your end.
Ad-Free
Unlike most outage checkers, there are no ads, pop-ups, or cookie walls between you and the answer.
No Account Needed
Just type a URL and hit check. There's nothing to sign up for and nothing to install.
Frequently Asked Questions
When you enter a URL, our backend (running on AWS Lambda) sends an HTTP request to that site and measures whether it responds and how long it takes. You get the actual HTTP status code and response time, not a guess based on user reports.
That is exactly what this tool answers. We check the site from our own servers, so if it loads for us but not for you, it is down just for you - a local network, DNS, or browser problem. If our check also fails, the site is down for everyone.
Downdetector aggregates user-submitted reports, which means results lag behind the actual outage and can spike from social media rumors. This tool makes a real HTTP connection to the site and tells you what happened. If we get a 200 OK, the site is up. If we get a timeout, it's not.
Our check runs from AWS us-east-1. If we can reach the site but you can't, the problem is between you and the server. Common causes: your ISP is having a routing issue, your DNS resolver has a stale cache, or the site is geo-blocking your region. Try flushing your DNS or switching to 1.1.1.1 or 8.8.8.8.
First flush your DNS cache: run ipconfig /flushdns on Windows, or sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder on Mac. If that does not help, clear your browser cache, disable any VPN, or switch to a public DNS resolver like Cloudflare 1.1.1.1 or Google 8.8.8.8, then try again.
The most common causes are server overload during traffic spikes, bad deployments that crash the app, expired SSL certificates (which browsers treat as a hard failure), DNS misconfigurations after a migration, and DDoS attacks. Scheduled maintenance is another common cause, though well-run sites announce that in advance on their status page.
Yes. Is It Down is 100% free with unlimited manual checks and no account or credit card required. If you want automated, around-the-clock monitoring with alerts, that is the paid upgrade at Status Tiger, but checking whether a site is up right now is always free here.
Yes - enter any domain to check it, including Facebook, YouTube, Netflix, Instagram, X/Twitter, Discord, Reddit, TikTok, Roblox, ChatGPT and any other site. There is no fixed list; if it has a URL, we can check it. To check many URLs at once, try our sister tool HTTP Tiger.
Yes, it is safe. We do not require an account, we do not show ads, and we only make a single HTTP request to the site you enter to read its status code. For a professional-grade status checker with more detail, see checkstatus.app, also part of the Tiger Network.
This tool is for on-demand manual checks. If you need continuous monitoring with alerts when your own site goes down, Status Tiger runs scheduled checks as often as every 30 seconds and can notify you via email, Slack, or Discord, plus track uptime history and SSL expiration.