Site Availability Check

Check whether a site is available via HTTP and HTTPS — response status, time and redirects.

Check is performed from 101IP servers — the result reflects availability from our network, not your ISP.

Site Availability Check Online

The Site Availability tool on 101IP checks whether a website responds to HTTP and HTTPS requests. Results show HTTP status, response time and the redirect chain.

HTTP status codes explained

2xx — site is online and responding normally (200 OK, 204 No Content);
3xx — redirect (301 Moved Permanently, 302 Found) — site is reachable;
4xx — client error (403 Forbidden, 404 Not Found) — server is responding;
5xx — server error (500, 503) — site is down or broken;
No response — server does not respond, domain does not resolve or connection is refused.

Why check availability

Confirm the site is working after a deploy or server configuration change;
Check whether the site is reachable from a network other than your own ISP;
Verify that HTTP redirects to HTTPS;
Diagnose SSL certificate or server issues.