Is that website down, or is it just you?
Check whether any site is up and reachable right now. We test both the naked and www domain over HTTP and HTTPS.
Naked and www, both protocols
Four checks run in parallel, so a broken www redirect or a dead HTTPS listener never hides behind a working root.
Certificate, redirects, headers
See who issued the TLS certificate, when it expires, every hop of the redirect chain, and the response headers.
DNS, hosting and security
Nameservers and records, who hosts or fronts the site, a security header grade, and the page title and size.