Website checks
Find out whether a site is really down, why an email never arrived, where a redirect leads and what a certificate actually covers.
- Is the website down?Check if a site is down for everyone or just for you.
- SSL checkerWho issued the certificate, which names it covers and when it expires.
- DNS lookupA, MX, TXT, NS records plus SPF, DMARC and DKIM checks.
- WHOIS lookupRegistrar, registration and expiry dates of a domain.
- Redirect checkerFollow every 301 and 302 hop to the final page.
- HTTP headers checkerResponse headers and a security header score.
- Page speed testGoogle Lighthouse scores, Core Web Vitals and what to fix first.
- Broken link checkerFind links on a page that lead to errors or redirects.
- What is my IPYour public IP address, country and browser details.
Website checks: what to know
When something breaks, the first job is telling apart "it is broken for everyone" from "it is broken for me". These checks run from the Holsha server, so the answer does not depend on your network or your cache.
DNS, SSL, headers, redirects and speed cover most of what goes wrong with a live site, and each check reports the raw result rather than a score with no explanation.
How to choose
- Email not arriving? Check SPF, DKIM and DMARC in the DNS lookup before blaming the mail provider.
- A redirect chain longer than one hop costs speed and loses link value — flatten it.
- Run the speed test on a real article page, not only on the home page.