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.
| # | 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 |
|---|---|---|---|
| citadele.lv | #40,428 | Google Tag Manager, Nginx, Slick Carousel + 1 more | Find emails |
| zohocloud.ca | #40,455 | — | Find emails |
| exoticindiaart.com | #40,507 | Bulma, Cloudflare, Font Awesome + 2 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| kontan.co.id |
| #40,557 |
| Amazon CloudFront, Amazon Route 53, Bootstrap + 12 more |
| Find emails |
| cae.com | #40,562 | Azure DNS, Cloudflare edge/CDN, Google Fonts + 8 more | Find emails |
| judicialwatch.org | #40,580 | AddThis, Cloudflare Bot Management, Cloudflare edge/CDN + 17 more | Find emails |
| fptshop.com.vn | #40,602 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| francophonie.org | #40,606 | Drupal, Google Analytics, Google Hosted Libraries + 8 more | Find emails |
| golfgalaxy.com | #40,630 | Akamai Bot Manager, Akamai edge/CDN, CSC (Digital Brand Services) | Find emails |
| anarchy-online.com | #40,631 | Bootstrap, Express, Google Analytics + 6 more | Find emails |
| siap-online.com | #40,637 | Bootstrap, Font Awesome, Google AdSense + 10 more | Find emails |
| host4africa.com | #40,664 | Font Awesome, Google Analytics, Google Fonts + 3 more | Find emails |
| 3dcartstores.com | #40,670 | Adobe Fonts (Typekit), Google Fonts, Google Hosted Libraries + 2 more | Find emails |
| unimed.ac.id | #40,787 | Bootstrap, Font Awesome, Modernizr + 3 more | Find emails |
| hufs.ac.kr | #40,806 | — | Find emails |
| att-securefamily.com | #40,808 | Amazon Route 53, Google Fonts, Nginx + 1 more | Find emails |
| totaladblock.com | #40,819 | Amazon Route 53, Cookiebot | Find emails |
| beinconnect.com.tr | #40,858 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 2 more | Find emails |
| redcafe.net | #40,894 | Amazon Route 53, Confiant, ConsentMo + 8 more | Find emails |
| sportsshoes.com | #40,895 | Cloudflare, Cloudflare edge/CDN, Next.js + 6 more | Find emails |
| roblox.us | #40,903 | Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| dr.com.tr | #40,927 | Amazon CloudFront, Amazon Route 53 | Find emails |
| duq.edu | #40,942 | AdRoll, Google Analytics, Google Hosted Libraries + 6 more | Find emails |
| seamlessaccess.org | #40,958 | Apache, CleanTalk, Simple Analytics + 3 more | Find emails |
| knightfrank.com | #40,968 | Azure API Management, Cloudflare edge/CDN, Google Fonts + 4 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 →