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.
| # | 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 |
|---|---|---|---|
| zendalibros.com | #71,863 | AddThis, AddToAny, Fancybox + 12 more | Find emails |
| extendoffice.com | #71,879 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 2 more | Find emails |
| lordswm.com | #71,880 | Amazon Route 53, Cloudflare edge/CDN, Google Analytics + 2 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| coreix.net | #71,909 | Google Analytics, Google Tag Manager, Microsoft 365 + 1 more | Find emails |
| bricocash.fr | #71,927 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| teletek.net.tr | #71,928 | Google Analytics, Google Tag Manager, Next.js + 4 more | Find emails |
| onlineconversion.com | #71,985 | Apache, Google AdSense, Google Analytics + 1 more | Find emails |
| chinadailyhk.com | #71,990 | Nuxt.js, PerimeterX (HUMAN), Swiper + 1 more | Find emails |
| looopings.nl | #71,993 | Apache, Google Analytics, Google Tag Manager + 1 more | Find emails |
| truenudists.com | #72,006 | Apache, Cloudflare Turnstile, Google Analytics + 4 more | Find emails |
| shinhwaspodium.com | #72,011 | Nginx | Find emails |
| sugrush.com | #72,028 | Nginx | Find emails |
| tirumala.org | #72,031 | ASP.NET, Google Analytics, jQuery | Find emails |
| roteskreuz.at | #72,040 | Friendly Captcha, Google Tag Manager, TYPO3 + 2 more | Find emails |
| exohosting.sk | #72,090 | Font Awesome, Google Fonts, Google Maps + 5 more | Find emails |
| presidencia.gov.br | #72,092 | — | Find emails |
| dominiosistemas.com.br | #72,135 | Adobe Advertising Cloud, Apache, Fancybox + 9 more | Find emails |
| bidcom.com.ar | #72,153 | Amazon Route 53, Amazon Web Services | Find emails |
| vmix.com | #72,189 | ASP.NET, Atlassian Statuspage, Bootstrap + 14 more | Find emails |
| usat.edu.pe | #72,235 | Font Awesome, Google Analytics, Google Site Kit + 7 more | Find emails |
| ultratechcement.com | #72,272 | Adobe Experience Cloud (Launch), Amazon CloudFront, Amazon Route 53 + 12 more | Find emails |
| toya.net.pl | #72,346 | ConsentMo, Fancybox, Font Awesome + 12 more | Find emails |
| foodics.com | #72,369 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| staffs.ac.uk | #72,405 | ASP.NET, Contensis, Google Fonts + 6 more | Find emails |
| kickresume.com | #72,437 | Bluesky, Bootstrap, Google Fonts + 8 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →