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 |
|---|---|---|---|
| github.com | #29 | Amazon Route 53, Contentful, GitHub + 5 more | Find emails |
| roblox.com | #73 | Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| nginx.com | #95 | Next.js, Tealium, The Trade Desk + 3 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #150 |
| Amazon CloudFront, Bootstrap, Font Awesome + 11 more |
| Find emails |
| avast.com | #202 | Adobe Advertising Cloud, Adobe Audience Manager, Adobe Experience Cloud (Launch) + 10 more | Find emails |
| ebay.com | #208 | Akamai Bot Manager, Akamai edge/CDN, NS1 | Find emails |
| scorecardresearch.com | #242 | ASP.NET, Amazon Route 53, Google Tag Manager + 5 more | Find emails |
| reuters.com | #280 | Amazon CloudFront, DataDome | Find emails |
| samsungcloud.com | #282 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 3 more | Find emails |
| inmobi.com | #287 | Google Cloud DNS, Google Tag Manager, ID5 + 7 more | Find emails |
| quickconnect.to | #354 | Amazon Route 53, Nginx | Find emails |
| ip-api.com | #414 | Amazon CloudFront, Bootstrap, Clicky + 4 more | Find emails |
| espn.com | #425 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| cloudns.net | #426 | Google Analytics, Google Tag Manager, Nginx + 2 more | Find emails |
| intel.com | #434 | Apache, Azure Front Door, Coveo + 4 more | Find emails |
| trendmicro.com | #535 | Akamai Edge DNS, Amazon API Gateway, Amazon CloudFront + 9 more | Find emails |
| rlcdn.com | #558 | Amazon Route 53 | Find emails |
| teamviewer.com | #561 | Adobe Experience Cloud (Launch), Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| jotform.com | #605 | Cloudflare, Google Tag Manager, Jotform | Find emails |
| free.fr | #615 | DoubleClick (Google Ads), Font Awesome, Google Hosted Libraries + 10 more | Find emails |
| cbsnews.com | #629 | Fastly, Ketch, NS1 + 1 more | Find emails |
| imgur.com | #655 | Amazon Route 53, Blockthrough, Fastly + 4 more | Find emails |
| ted.com | #670 | Amazon Route 53, DoubleClick (Google Ads), Fastly + 15 more | Find emails |
| mediafire.com | #710 | Amplitude, Bootstrap, Cloudflare + 15 more | Find emails |
| marriott.com | #735 | Akamai Edge DNS, Akamai edge/CDN, Microsoft 365 | 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 →