SSL/TLS Certificates
33,361 of the 1,000,000 top sites in our Tranco top-1M census run Sectigo (3.3%). A certificate authority that issues SSL/TLS certificates used to secure websites with HTTPS. Detection is homepage-level HTML/header fingerprinting, so a site can run Sectigo on other pages without it showing here.
Other ssl/tls certificates
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | github.com | #29 (Tranco) | Find emails |
| 2 | roblox.com | #73 (Tranco) | Find emails |
| 3 | nginx.com | #95 (Tranco) | Find emails |
| 4 | f5.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| manageengine.com | #5,966 | Baidu Maps, Google Analytics, Google Maps + 2 more | Find emails |
| vultr.com | #5,970 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN | Find emails |
| aktuality.sk | #5,977 | Fastly, Google Fonts, Google Tag Manager + 2 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| haproxy.com |
| #5,986 |
| Apache, Google Tag Manager, Plausible + 2 more |
| Find emails |
| admixer.net | #6,048 | ASP.NET, Admixer, Fancybox + 9 more | Find emails |
| ves.io | #6,082 | Google Cloud DNS, Next.js, Tealium + 4 more | Find emails |
| lavozdegalicia.es | #6,101 | Bootstrap, Didomi, DoubleClick (Google Ads) + 9 more | Find emails |
| resetdigital.co | #6,169 | Bootstrap, Fancybox, Font Awesome + 4 more | Find emails |
| academy.com | #6,187 | Adobe Fonts, Adobe Fonts (Typekit), Clarip + 6 more | Find emails |
| literotica.com | #6,203 | Matomo | Find emails |
| besoccer.com | #6,220 | AppsFlyer, Bootstrap, Fastly + 14 more | Find emails |
| haproxy.org | #6,240 | Amazon Route 53, Apache, Bootstrap + 5 more | Find emails |
| cscdns.net | #6,259 | Azure Front Door, Bootstrap, Google Tag Manager + 2 more | Find emails |
| artnet.com | #6,284 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| avira.net | #6,285 | Adobe Experience Cloud (Launch), Akamai edge/CDN, Akamai mPulse + 5 more | Find emails |
| gencat.cat | #6,286 | Apache | Find emails |
| lululemon.com | #6,319 | Akamai Edge DNS, Akamai edge/CDN, Microsoft 365 | Find emails |
| dandomain.dk | #6,381 | Bootstrap, Trustpilot, Varnish + 1 more | Find emails |
| csfd.cz | #6,386 | Didomi, Gemius, Google Tag Manager + 3 more | Find emails |
| astro.com | #6,398 | Apache, Bootstrap, Font Awesome + 3 more | Find emails |
| thomsonreuters.co.uk | #6,409 | Adobe Experience Cloud (Launch), Adobe Target, AppDynamics + 9 more | Find emails |
| tate.org.uk | #6,486 | AB Tasty, Didomi, Fastly + 7 more | Find emails |
| sunat.gob.pe | #6,602 | Bootstrap, Google Analytics, Google Fonts + 4 more | Find emails |
| taoa.com | #6,607 | Google Identity Services, Meta Pixel, Nginx + 2 more | Find emails |
| smartrecruiters.com | #6,609 | Adobe Fonts (Typekit), All in One SEO, Amazon Route 53 + 18 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →