SSL/TLS Certificates
30,905 of the 1,000,000 top sites in our Tranco top-1M census run Sectigo (3.1%). 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 |
|---|---|---|---|
| ludwigsburg.de | #203,646 | Apache, Bootstrap, Matomo + 2 more | Find emails |
| ic37.com | #203,649 | Font Awesome, Nginx, PHP + 2 more | Find emails |
| rhhz.net | #203,682 | Baidu Analytics, BootCDN, Bootstrap + 2 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| 8yu.com |
| #203,729 |
| ASP.NET, Microsoft IIS |
| Find emails |
| hameln.de | #203,741 | Cookiebot, TYPO3 | Find emails |
| plusmate.jp | #203,878 | Apache, PHP | Find emails |
| brikorea.com | #203,908 | OpenResty | Find emails |
| renault.co.kr | #203,918 | Amazon Web Services | Find emails |
| mondossiernotaire.fr | #204,022 | ASP.NET, Microsoft 365, Nginx | Find emails |
| academiaprefortia.com | #204,053 | ASP.NET, Amazon Route 53, Google Hosted Libraries + 6 more | Find emails |
| howrse.co.uk | #204,060 | Azure DNS, Nginx, Swiper + 1 more | Find emails |
| matejovsky-povleceni.cz | #204,065 | Font Awesome, Google Analytics, Google Tag Manager + 2 more | Find emails |
| qm.edu.sa | #204,073 | ASP.NET, Ahrefs Analytics, Bootstrap + 10 more | Find emails |
| unibarranquilla.edu.co | #204,077 | Bootstrap, Font Awesome, Google Analytics + 8 more | Find emails |
| welcomeclient.com | #204,100 | Akamai Edge DNS, Bootstrap, Google Tag Manager + 2 more | Find emails |
| fitdays.cn | #204,125 | Alibaba Cloud DNS, Bootstrap, Font Awesome + 3 more | Find emails |
| pedagogica.edu.sv | #204,174 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| wavea.cc | #204,177 | Amazon Route 53, Bootstrap, Cookiebot + 4 more | Find emails |
| ngii.go.kr | #204,191 | Nginx | Find emails |
| hopone.net | #204,202 | Apache, Google Fonts, WordPress | Find emails |
| naturstyrelsen.dk | #204,205 | Google Fonts, Next.js, React | Find emails |
| adalah.org | #204,236 | AddThis, Apache, Drupal + 6 more | Find emails |
| orange.ci | #204,238 | — | Find emails |
| diverza.com | #204,299 | All in One SEO, Fancybox, Font Awesome + 4 more | Find emails |
| crea-mt.org.br | #204,371 | Bootstrap, Font Awesome, Google Fonts + 2 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →