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 |
|---|---|---|---|
| osbeck.com | #137,611 | Cloudflare, GitHub, GitHub Pages | Find emails |
| iif.com | #137,624 | ASP.NET, AngularJS, Bootstrap + 11 more | Find emails |
| kkp.go.id | #137,661 | AOS, Bootstrap, Google Fonts + 10 more | Find emails |
| merlincycles.com |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #137,663 |
| Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 4 more |
| Find emails |
| didactic.ro | #137,686 | Cookiebot, Font Awesome, Google Publisher Tag + 4 more | Find emails |
| petit-bateau.fr | #137,706 | Amazon CloudFront, Bazaarvoice, OneTrust + 1 more | Find emails |
| gnu.ac.kr | #137,723 | Nginx, Slick Carousel, jQuery + 1 more | Find emails |
| serverdomain.org | #137,763 | Apache | Find emails |
| e-history.kz | #137,766 | Google Tag Manager, Meta Pixel, Nginx + 1 more | Find emails |
| softcom.net | #137,783 | Divi, Google AdSense, Google Fonts + 6 more | Find emails |
| styria-it.hr | #137,801 | Cloudflare Turnstile, Font Awesome, Nginx + 4 more | Find emails |
| arpas.com.tr | #137,823 | ASP.NET, Bootstrap, Google Fonts + 3 more | Find emails |
| worldvaluessurvey.org | #137,835 | Meta Pixel, PayPal, Twitter/X Widgets + 1 more | Find emails |
| tegna.com | #137,843 | AOS, AddToAny, Adobe Fonts (Typekit) + 18 more | Find emails |
| peoplesjewellers.com | #137,867 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 2 more | Find emails |
| zim.vn | #137,896 | Cloudflare, Google Analytics, Google Tag Manager + 4 more | Find emails |
| nyuhs.org | #137,933 | ConsentMo, Drupal, Google Maps + 2 more | Find emails |
| onera.fr | #137,940 | Apache, Bluesky, Bootstrap + 7 more | Find emails |
| ewubd.edu | #137,945 | AOS, Apache, Bootstrap + 10 more | Find emails |
| brownsbfs.co.uk | #137,962 | ASP.NET, Bootstrap, Font Awesome + 5 more | Find emails |
| domenomania.eu | #138,003 | Cookiebot, Google Analytics, Google Tag Manager + 3 more | Find emails |
| kabelmail.de | #138,013 | Imperva | Find emails |
| proplanta.de | #138,023 | Apache, Fancybox, Font Awesome + 8 more | Find emails |
| tib.org | #138,045 | Bootstrap, Liferay, Microsoft 365 + 4 more | Find emails |
| pua.edu.eg | #138,080 | Apache, Bootstrap, Font Awesome + 5 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 →