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 |
|---|---|---|---|
| tele2.se | #14,747 | Astro, Google Fonts, Microsoft 365 + 1 more | Find emails |
| slrclub.com | #14,783 | Google Publisher Tag, PHP, jQuery | Find emails |
| osti.gov | #14,800 | Apache, Font Awesome, Google Analytics + 1 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #14,855 |
| Cloudflare edge/CDN, Next.js, Turbopack + 1 more |
| Find emails |
| ionos.co.uk | #14,918 | Apache, Kameleoon, Next.js + 2 more | Find emails |
| asadal.net | #14,991 | Apache, jQuery | Find emails |
| 1blu.de | #14,994 | Bunny CDN, BunnyCDN, PHP | Find emails |
| ghe.com | #15,011 | Amazon Route 53, Contentful, GitHub + 2 more | Find emails |
| webland.ch | #15,065 | AOS, Amazon CloudFront, Atlassian Cloud + 13 more | Find emails |
| symbaloo.com | #15,069 | Google Analytics, Google Tag Manager | Find emails |
| donanimhaber.com | #15,081 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| nic.sh | #15,107 | Font Awesome, Google Analytics, Google Tag Manager + 1 more | Find emails |
| analdin.com | #15,108 | Nginx, PHP | Find emails |
| monespacesante.fr | #15,138 | Angular | Find emails |
| gazelzone.com | #15,143 | Apache, Bootstrap, Font Awesome + 4 more | Find emails |
| rbc.com | #15,149 | — | Find emails |
| fes.de | #15,154 | ConsentMo, Nginx, TYPO3 | Find emails |
| eurowings.com | #15,172 | Akamai Edge DNS, Cloudflare Bot Management, Cloudflare Turnstile + 2 more | Find emails |
| doximity.com | #15,201 | Amazon CloudFront, Amazon Route 53, Bugsnag + 6 more | Find emails |
| lifelock.com | #15,248 | Akamai edge/CDN, Akamai mPulse, Microsoft 365 + 2 more | Find emails |
| reading.ac.uk | #15,264 | Apache, Azure API Management, Font Awesome + 9 more | Find emails |
| huntington.com | #15,277 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 5 more | Find emails |
| etonline.com | #15,316 | Express, Fastly, Ketch + 6 more | Find emails |
| fortes.pro | #15,329 | Fancybox, Google Fonts, Google Tag Manager + 5 more | Find emails |
| bham.ac.uk | #15,343 | Contensis, Google Tag Manager, Varnish + 1 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 →