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 |
|---|---|---|---|
| freerepublic.com | #15,348 | Nginx | Find emails |
| tmgrup.com.tr | #15,386 | Amazon Route 53, Bootstrap, Cookiebot + 4 more | Find emails |
| liverpool.ac.uk | #15,397 | Adobe Fonts (Typekit), Citrix NetScaler, Elfsight + 6 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| medpagetoday.com |
| #15,404 |
| Adobe Fonts, Adobe Fonts (Typekit), Akamai Bot Manager + 11 more |
| Find emails |
| todocoleccion.net | #15,423 | Bootstrap, Chatbase, Cloudflare + 7 more | Find emails |
| sussex.ac.uk | #15,441 | Apache, Modernizr, Vimeo + 1 more | Find emails |
| bravehost.com | #15,525 | Apache, Bootstrap, DoubleClick (Google Ads) + 9 more | Find emails |
| tienphong.vn | #15,552 | Cloudflare, Google Analytics, Google Fonts + 2 more | Find emails |
| wien.at | #15,561 | Adform, Bluesky, Siteimprove | Find emails |
| hugoboss.com | #15,597 | Adyen, Akamai Bot Manager, Akamai edge/CDN + 13 more | Find emails |
| internic.net | #15,602 | Apache | Find emails |
| virtuaserver.com.br | #15,627 | Foundation, Google Ads Conversion, Google Analytics + 13 more | Find emails |
| gouvernement.fr | #15,713 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN | Find emails |
| theworkpc.com | #15,763 | ASP.NET, Bootstrap, Font Awesome + 4 more | Find emails |
| wallethub.com | #15,803 | Cloudflare, Cloudflare edge/CDN, Feedburner + 6 more | Find emails |
| comcastbusiness.net | #15,828 | Akamai Bot Manager, Akamai edge/CDN, Akamai mPulse + 5 more | Find emails |
| buddyns.com | #15,836 | Bootstrap, Django, DoubleClick (Google Ads) + 8 more | Find emails |
| iqvia.com | #15,853 | Coveo, Google Fonts, Google Tag Manager + 3 more | Find emails |
| eba.gov.tr | #15,916 | AOS, Bootstrap, Google Analytics + 7 more | Find emails |
| city-data.com | #15,935 | Bootstrap, Google AdSense, Google Analytics + 3 more | Find emails |
| airliquide.com | #15,947 | Akamai Bot Manager, ConsentMo, Didomi + 9 more | Find emails |
| emailsrvr.com | #15,966 | OpenResty | Find emails |
| calculatorsoup.com | #15,968 | Apache, DoubleClick (Google Ads), Google Analytics + 4 more | Find emails |
| tadagaming.com | #15,978 | GSAP, Google Fonts, Google Tag Manager + 7 more | Find emails |
| kpn.com | #16,002 | Adobe Experience Cloud (Launch), Amazon CloudFront, Contentful + 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →