# isitdown.page

> Free, privacy-focused website status checker. Instantly verify if any website is down with a 4-layer real-time check (DNS, TCP, HTTP, content) and a suite of free diagnostic tools.

isitdown.page lets anyone check whether a website is currently reachable from the public internet. Unlike traditional "is it down?" sites that rely on user reports, every check runs live across four independent layers and returns the result in seconds. The site also publishes status pages for popular services and a growing library of free network and SEO diagnostic tools.

## Pages

- [Home](/): Run a live check on any domain.
- [All monitored sites](/sites): Directory of every service with a public status page.
- [Outages](/outages): Recent and ongoing outage reports.
- [How it works](/how-it-works): The 4-layer check system explained.
- [About](/about): What isitdown.page is and who builds it.
- [Contact](/contact): Get in touch.

## Tools

- [Tools index](/tools): All free diagnostic tools.
- [DNS lookup](/tools/dns-lookup): Resolve A, AAAA, MX, TXT, NS, CNAME records.
- [DNS propagation checker](/tools/dns-propagation): Check DNS resolution from servers worldwide.
- [HTTP header checker](/tools/http-headers): Inspect response headers for any URL.
- [SSL certificate checker](/tools/ssl-checker): Verify TLS certificates, expiry, and chain.
- [Ping test](/tools/ping): Measure latency to a host.
- [WHOIS lookup](/tools/whois): Domain registration and ownership data.
- [Speed test](/tools/speed-test): Page load performance and waterfall analysis.
- [Port checker](/tools/port-checker): Check whether a TCP port is open.
- [Email auth checker](/tools/email-auth): Verify SPF, DKIM, and DMARC records.
- [Meta tag checker](/tools/meta-tag-checker): Audit a page's SEO meta tags.
- [Open Graph checker](/tools/open-graph-checker): Preview social card metadata.
- [Redirect checker](/tools/redirect-checker): Trace the full redirect chain.
- [Security headers checker](/tools/security-headers): Audit HTTP security headers.
- [IP geolocation](/tools/ip-geolocation): Locate any IP address.
- [robots.txt tester](/tools/robots-txt): Validate a site's robots.txt rules.
- [Sitemap validator](/tools/sitemap-validator): Validate XML sitemaps and sitemap indexes.
- [MX lookup](/tools/mx-lookup): Inspect a domain's mail exchange records.
- [Reverse DNS lookup](/tools/reverse-dns): Resolve an IP back to its hostname.
- [Google index checker](/tools/google-index): Check whether a URL is indexed by Google.
- [JSON formatter](/tools/json-formatter): Format and validate JSON.
- [Base64 encoder/decoder](/tools/base64): Encode or decode Base64 strings.
- [URL encoder/decoder](/tools/url-encoder): Percent-encode or decode URLs.
- [Tech stack detector](/tools/tech-stack): Detect the technologies a site is built with.
- [Keyword density checker](/tools/keyword-density): Analyze word and phrase frequency for SEO.

## Guides

- [Why is every website down?](/why-is-every-website-down): Common causes of mass outages.
- [How to check if a website is down](/how-to-check-if-website-is-down): Step-by-step diagnostic guide.
- [How long does DNS propagation take?](/how-long-does-dns-propagation-take): What to expect after DNS changes.
- [Is it just me?](/is-it-just-me): How to tell if an outage affects only you.

## Optional

- [Privacy policy](/privacy)
- [Terms of service](/terms)
- [Cookie policy](/cookies)