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 |
|---|---|---|---|
| starbucks.it | #149,723 | CSC (Digital Brand Services), Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| ekn.kr | #149,758 | DoubleClick (Google Ads), Google Analytics, Google Publisher Tag + 7 more | Find emails |
| futbolperuano.com | #149,762 | DoubleClick (Google Ads), Google AMP, Google AdSense + 5 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| elle.com.hk | #149,766 | Alibaba Cloud CDN, Amazon Advertising, Citrix NetScaler + 16 more | Find emails |
| penguingroup.com | #149,782 | Amazon CloudFront, Google Hosted Libraries, Nginx + 4 more | Find emails |
| generali.de | #149,783 | AB Tasty, Apache, Imperva + 3 more | Find emails |
| 2sao.vn | #149,810 | Google AdSense, Google Analytics, Google Fonts + 2 more | Find emails |
| androidkosmos.de | #149,817 | Apache, Consentmanager.net, Google Analytics + 7 more | Find emails |
| lhu.edu.tw | #149,846 | YouTube | Find emails |
| instituto-camoes.pt | #149,857 | Apache, Bootstrap, Google Analytics + 8 more | Find emails |
| allenovery.com | #149,926 | Azure DNS, Google Tag Manager, Next.js + 3 more | Find emails |
| primadonnacollection.com | #149,936 | Cloudflare edge/CDN, Convert, OneTrust + 2 more | Find emails |
| iplace.at | #149,953 | Nginx, PHP | Find emails |
| palermo.com.ar | #149,964 | Apache, Google Fonts, Google Tag Manager + 4 more | Find emails |
| brandweer.nl | #150,004 | Font Awesome, Google Fonts, Google Tag Manager + 6 more | Find emails |
| elmundo.sv | #150,015 | Amazon Route 53, DoubleClick (Google Ads), Google Analytics + 8 more | Find emails |
| electroluxgroup.com | #150,016 | Akamai Edge DNS, Google Tag Manager, Microsoft 365 + 3 more | Find emails |
| voetbal.nl | #150,046 | Drupal, Google Tag Manager, reCAPTCHA | Find emails |
| totalpassword.com | #150,078 | Amazon Route 53, Cookiebot | Find emails |
| shiro-shiro.jp | #150,099 | Adobe Fonts (Typekit), Font Awesome, GSAP + 10 more | Find emails |
| tivolihotels.com | #150,109 | Cloudflare Bot Management, Cloudflare edge/CDN, Microsoft 365 + 1 more | Find emails |
| mydaily.co.kr | #150,194 | Daum, DoubleClick (Google Ads), Google AdSense + 9 more | Find emails |
| akhwien.at | #150,207 | ASP.NET, jQuery | Find emails |
| tsukaeru.net | #150,272 | All in One SEO, Bootstrap, Font Awesome + 6 more | Find emails |
| iressasavings.com | #150,285 | Amazon CloudFront | 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 →