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 |
|---|---|---|---|
| infomaniak.com | #3,029 | Gatsby, React | Find emails |
| habr.com | #3,037 | Google Fonts, Qrator, reCAPTCHA + 1 more | Find emails |
| cancer.org | #3,072 | Azure DNS, Fastly, Google Fonts + 5 more | Find emails |
| sonos.com |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #3,073 |
| Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 3 more |
| Find emails |
| bttrack.com | #3,074 | — | Find emails |
| acuityplatform.com | #3,101 | Microsoft 365 | Find emails |
| novell.com | #3,131 | Akamai edge/CDN, Akamai mPulse | Find emails |
| esa.int | #3,132 | Bluesky, Fastly, Font Awesome + 9 more | Find emails |
| uhc.com | #3,134 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Amazon CloudFront + 3 more | Find emails |
| cnil.fr | #3,155 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| libero.it | #3,158 | Amazon Advertising, Amazon CloudFront, Apache + 4 more | Find emails |
| iionads.com | #3,166 | — | Find emails |
| walkme.com | #3,177 | Amazon Route 53, Nginx, Parse.ly + 3 more | Find emails |
| porsche.com | #3,182 | Akamai edge/CDN, Astro, ConsentMo + 3 more | Find emails |
| websupport.sk | #3,188 | Adform, DoubleClick (Google Ads), Fastly + 18 more | Find emails |
| macys.com | #3,194 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 6 more | Find emails |
| ning.com | #3,199 | Amazon Route 53, Cloudflare Turnstile, Font Awesome + 13 more | Find emails |
| thingiverse.com | #3,214 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| consumerreports.org | #3,223 | Amazon CloudFront, Bluesky, Brightcove + 5 more | Find emails |
| webgo.de | #3,224 | Font Awesome, Livewire, Microsoft 365 + 6 more | Find emails |
| justia.com | #3,227 | Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| redbull.com | #3,301 | Microsoft 365 | Find emails |
| sjv.io | #3,306 | Amazon Route 53 | Find emails |
| tynt.com | #3,329 | 33Across, Adobe Fonts (Typekit) | Find emails |
| cbssports.com | #3,371 | Branch, DoubleClick (Google Ads), Google Publisher Tag + 11 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 →