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 |
|---|---|---|---|
| thegsresources.com | #253,041 | Apache, Google Fonts, PHP | Find emails |
| uch.edu | #253,078 | ActiveCampaign, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| conn.tw | #253,082 | Amazon Route 53, Apache, DoubleClick (Google Ads) + 4 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| remotecto.dev |
| #253,160 |
| Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN |
| Find emails |
| roproxy.com | #253,176 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| irpinianetcom.it | #253,188 | Bootstrap, Nginx, PHP + 3 more | Find emails |
| tennis.org.nz | #253,216 | ASP.NET, Google Analytics, Meta Pixel + 3 more | Find emails |
| directv.com.co | #253,217 | Amazon CloudFront, Amazon Route 53, Hotjar + 3 more | Find emails |
| myluxstat.io | #253,227 | Azure API Management, Namecheap | Find emails |
| umov.me | #253,272 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| cloudfilt.com | #253,283 | AOS, Apache, Atlassian Statuspage + 18 more | Find emails |
| spruceit.com | #253,295 | AB Tasty, Azure DNS, Bazaarvoice + 6 more | Find emails |
| photosex.biz | #253,333 | Nginx | Find emails |
| venuewifi.com | #253,344 | Amazon Route 53, Google Fonts, Nginx | Find emails |
| redtechnology.com | #253,345 | Adyen, ConsentMo, DoubleClick (Google Ads) + 14 more | Find emails |
| intec.edu.do | #253,355 | Azure DNS, Font Awesome, Google Ads Conversion + 8 more | Find emails |
| amgenassist.com | #253,403 | ASP.NET, Amazon Route 53, Google Fonts + 1 more | Find emails |
| teafone.com | #253,405 | Nginx | Find emails |
| macropoint.com | #253,413 | Amazon Route 53, Azure API Management, Bootstrap + 16 more | Find emails |
| senior.de | #253,445 | Apache, Awin, Google Tag Manager + 2 more | Find emails |
| dst.ca | #253,460 | Apache, Google Fonts, Gravatar + 2 more | Find emails |
| affpaying.com | #253,586 | Alibaba Cloud DNS, Clicky, Nginx + 1 more | Find emails |
| 360gradberatung.de | #253,663 | Apache, Awin, Google Tag Manager + 2 more | Find emails |
| historyisaweapon.com | #253,727 | Apache, PHP | Find emails |
| aua.com | #253,740 | Cloudflare Bot Management, Cloudflare edge/CDN | 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 →