Check a website

What Check-Host does

Check-Host is a free website availability checker that tests a site from many countries at once. Enter a domain name or a full page URL, and the service sends HTTP requests from dozens of nodes located in Europe, North and South America, Asia, the Middle East and other regions. For every node you get the HTTP status code, the response time in milliseconds and the IP address and city of the node. All results are plotted on a world map: green markers mean the site answered, orange markers mean it answered with an error, red markers mean it did not answer at all.

How the check works

The check runs through a pool of proxy servers. Before the check starts, the service determines the real exit country of every proxy, so the results show where the node actually is rather than only what the provider claims. One stable node is selected for each country, which covers the maximum number of countries in the shortest time. Requests are made over HTTP and HTTPS to ports 80 and 443, with TLS certificate validation and redirect following. The response time includes the proxy latency, so compare nodes with each other rather than with your own browser.

Why check a site from different countries

• Make sure the site opens not only for you but also abroad.
• Verify geo-blocking rules, CDN behaviour and regional DNS.
• Find availability problems in a specific country or region.
• Compare server response speed from Europe, the USA and Asia.
• Check redirects, the HTTPS certificate and status codes after a migration.
• Confirm the site is reachable for customers, partners or ad platforms.

How to read the results

A green marker means the node received a 2xx or 3xx response. Orange means the server answered with a 4xx or 5xx code: the page was not found, access was denied, or the site itself returned an error. Red means the node received no response: the request timed out, the connection failed, the domain did not resolve, or the SSL handshake failed. Some websites deliberately block requests from proxies and data centres, so a single red result does not always mean the site is down for real users.

Limitations

For availability checks, HTTP and HTTPS are used (ports 80 and 443). You can also check a TCP port, a DNS answer and HTTP headers, while UDP is checked from the service server. Private network addresses are blocked. The nodes are server connections, not home broadband lines, so the results are indicative and may differ from what a user in that country actually sees.

Result links and privacy

Every check gets a short link such as /?id=... that you can share with a colleague or a client. Results are kept in memory for two hours and then deleted. No registration is required. One IP address can start up to ten checks per hour, and an API key up to five per hour, which protects the shared proxy pool from overload.

Frequently asked questions

Is the service free? Yes, with no registration and no restrictions on the type of site.

Can I check an IP address? Yes. Enter an IP address or a domain and the service will build an http:// or https:// request.

Why are the results different from check-host.net? A different set of nodes and a different proxy pool are used, so the response times and countries may differ.

Is this service affiliated with check-host.net? No, it is an independent project.