Is This Website Up? Uptime Checker
This free uptime checker requests a website from our server right now and tells you whether it answered, with the HTTP status, response time, server header and certificate state, retrying once if the first attempt fails. It is a single check from one location, not monitoring: it settles "is it down for everyone or just me" and nothing more.
Website Uptime Checker
Technical SEO
About this tool
"Is it down or is it just me?" is the first question when a site will not load. Your own network, a DNS cache, a browser extension or a regional outage can all make a working site look dead from where you sit, while a real outage looks the same. One request from a server somewhere else answers it in a second and tells you whether to call the host or restart your router.
The checker requests the address from the SEO SMO HUB server, following redirects, and stops after the first kilobyte so the check stays light. If nothing answers it waits a moment and tries once more, because a single dropped connection is common. It reports whether the site is reachable, the status code, the time taken, the Server header and whether the HTTPS certificate verified, stamped with the time of the check.
A single check from one place is not uptime monitoring. It cannot tell you how often a site has been down, how long outages lasted, or whether visitors in another country can reach it, and a site that blocks data-centre addresses can look down here while working for everyone else. For alerts and history, use a monitoring service that polls every minute from several regions.
Frequently asked questions
The checker says the site is up but I cannot open it. Why?
The problem is between you and the site: a DNS cache holding an old address, a firewall or ISP block, a browser extension, a VPN, or a regional outage. Try another network (mobile data), flush your DNS cache, or open the site in a private window. If it works there, the site is fine.
The checker says the site is down but it works for me. Why?
Your browser may be showing a cached copy, or the site blocks visitors from data-centre addresses with a firewall or bot protection, which refuses our request while serving yours. A 403 or a dropped connection with a working site in your browser is almost always a block, not an outage.
What is the difference between an uptime check and uptime monitoring?
A check is one request at one moment from one place. Monitoring repeats it every minute or so from several locations, records every failure, measures how long outages last and alerts you by email or message. Use this page to answer a question now; use a monitoring service to know about problems before your visitors tell you.
What does a 503 or 502 status mean?
503 means the server is temporarily unable to serve, often during maintenance or overload. 502 means a gateway or proxy (such as a CDN or a load balancer) could not get a valid answer from the server behind it. Both usually mean the hosting server or application has a problem and the host should be told.
How much uptime should I expect from a host?
Most hosts promise 99.9 percent, which still allows about 45 minutes of downtime a month. 99.99 percent allows about four minutes. Check what your plan guarantees, and monitor it yourself, because providers measure from their own side.