Online Status Checker

Enter the URL in the box above and click Check Status. At-use.com sends an HTTP request from our server and returns the result in seconds — showing the HTTP status code, response time, and a plain-language verdict. A 200 or 301 response means the site is reachable from our server. No response or a 5xx code means the site is down or refusing connections.

Common causes include: the web server or application crashing, a hosting provider outage, a DDoS attack absorbing server capacity, a database failure preventing pages from loading, a misconfigured deployment, or an expired domain name. Some outages affect only one geographic region when a CDN or load balancer has a partial failure.

HTTP 503 (Service Unavailable) means the server is running but cannot handle the request right now — typically because it is overloaded, in maintenance mode, or the load balancer cannot reach the backend. It is usually temporary. If a 503 persists beyond a few minutes, it indicates an active incident rather than a momentary queue spike.

A site can return HTTP 200 (online) while being practically unusable. This happens when a server is overloaded but still processing some requests, when a CDN is serving a cached version while the backend has degraded, or when a third-party resource (ads, fonts, or analytics scripts) is slow and blocking page rendering. This checker reports reachability, not page-load speed.

This tool checks from at-use.com's server, not your connection. If we show the site as online but it is unreachable from your browser, the problem is local — a stale DNS cache, a VPN routing issue, or your ISP blocking the domain. If we also show the site as down, the issue is external. Try the check from a mobile connection to confirm whether the problem is on your end.

This tool runs one check on demand — you trigger it manually each time. For continuous monitoring with automatic re-checks on a schedule, use UptimeRobot or Pingdom (both have free tiers). They check every 1–5 minutes from multiple global locations and send email alerts when a site goes down. This tool is designed for manual spot-checks and incident triage.

Our server in Israel performs the HTTP request. If you need geographic distribution, run multiple checks from external monitors as well.

Some sites block unknown bots or non-browser user-agents at the firewall, returning 403. The site may still be up for human visitors.

We treat 2xx and 3xx codes as online. 4xx and 5xx codes are reported as offline since they usually indicate a problem.

Yes — recent checks are stored anonymously and shown in the Recent Checks panel so you can see usage patterns over time.

No. A single check is a point-in-time snapshot — it tells you whether the site responded to one request from our server at that moment. For SLA-critical services, use a continuous monitoring tool (UptimeRobot, Pingdom, StatusCake) that checks on a schedule and alerts you when downtime exceeds a threshold. One-shot checks are best for incident triage and manual spot-checks.

A ping test (ICMP echo) operates at Layer 3/4 of the network stack — it only checks whether a host is reachable at the IP level and measures round-trip latency. An HTTP status check (like this tool) operates at Layer 7 — it verifies that the web server is running, responding, and returning a status code. A site can pass a ping test but fail an HTTP check if the web server is down but the host is still reachable.

Website uptime is the percentage of time a server is reachable and responding to requests. It is usually expressed as a monthly percentage — 99.9% uptime means roughly 44 minutes of downtime per month; 99.99% ("four nines") means about 4 minutes. Most uptime monitoring services calculate it by checking the site on a schedule (every 1–5 minutes) and recording how often the check fails. A single on-demand check like this tool gives you a point-in-time snapshot, not a continuous uptime percentage — use a dedicated monitoring service like UptimeRobot or Pingdom to track uptime over time.

This tool checks on demand only — it does not monitor on a schedule or send alerts. For automated downtime alerts, use a dedicated uptime monitoring service. UptimeRobot, Pingdom, Better Uptime, and StatusCake all offer free tiers that check every 1–5 minutes from multiple global locations and send email or Slack alerts when downtime starts. This checker is the right tool for a manual spot-check or immediate incident triage.

This tool checks whether the site responds to an HTTP request — it confirms the server is online but does not assess content safety, malware, or SSL certificate validity. For a security assessment, check the SSL certificate with our <a href="/tools/ssl-checker">SSL Certificate Checker</a> and look up the domain's registration details with the <a href="/tools/whois-lookup">WHOIS Lookup</a>. For malware or reputation checks, use Google Safe Browsing or VirusTotal.

When news or social media reports a major website is "down," it typically means the service is unreachable for large numbers of users, not just one person. This usually points to a server or infrastructure problem: the server crashed, a hosting provider had an outage, a CDN failed in multiple regions, or a DDoS attack is absorbing capacity. An online status check confirms whether the site is still unreachable at the moment you check. Outages often resolve faster than social media reports about them.

Three causes cover most cases. First, a partial outage: a CDN or load balancer is failing in some regions but not others, so users in one location see the site while users elsewhere cannot. Second, DNS caching: one person's browser or ISP is serving a cached working record while another is resolving a broken new record. Third, a CDN is serving cached pages to some users while the origin server is down — those users see content, but uncached pages return errors. A single-location checker like this tool cannot detect all of these scenarios.

Use this tool. If the checker shows the site as online and you still cannot reach it, the problem is local: DNS cache, VPN, browser cache, or network filtering. Try a private or incognito window, then flush your DNS cache, then try from a mobile data connection (not your home Wi-Fi) — each step eliminates one cause. If this tool also shows the site as offline, the failure is external: the site is down from a neutral vantage point, not just from your network.

Start with this tool to establish whether the site is externally reachable or only down for you. If it shows up here but won't load in your browser, open a private or incognito window — this rules out browser extensions and cached bad responses. If that doesn't help, flush your DNS cache and retry. If you are on a VPN, disconnect and try without it. If the site still won't load, use the DNS Lookup tool to confirm the domain resolves correctly and the Port Checker to verify port 443 is open. Work outward from your local connection before assuming the site has a server problem.