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 |
|---|---|---|---|
| mail.com | #3,917 | Google Tag Manager, Nginx | Find emails |
| easyjet.com | #3,928 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 1 more | Find emails |
| zenodo.org | #3,930 | Bootstrap, Cloudflare, Fastly + 9 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #3,969 |
| Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 1 more |
| Find emails |
| nic.fr | #4,010 | Apache, Bootstrap, Font Awesome + 6 more | Find emails |
| openoffice.org | #4,028 | Amazon Route 53, Apache | Find emails |
| kia.com | #4,039 | Adobe Experience Cloud (Launch), AudioEye, Cloudflare Bot Management + 9 more | Find emails |
| ivideon.com | #4,052 | Amazon Route 53, Diginetica, Google Fonts + 3 more | Find emails |
| elespanol.com | #4,066 | Amazon Route 53, EX.CO, Google Tag Manager + 1 more | Find emails |
| anu.edu.au | #4,074 | Font Awesome, Microsoft 365, Nginx + 3 more | Find emails |
| spaceship.com | #4,079 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN | Find emails |
| evidon.com | #4,129 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| fnac.com | #4,138 | Akamai Edge DNS, DataDome, Microsoft 365 | Find emails |
| op.gg | #4,139 | Amazon CloudFront, Amazon Route 53, Cloudflare Bot Management + 6 more | Find emails |
| scw.cloud | #4,149 | Cloudflare edge/CDN, Next.js, Turbopack + 1 more | Find emails |
| consentmanager.net | #4,160 | Amazon Route 53, Bunny CDN, BunnyCDN + 2 more | Find emails |
| dickssportinggoods.com | #4,162 | Akamai Bot Manager, Akamai edge/CDN, CSC (Digital Brand Services) | Find emails |
| ucsf.edu | #4,214 | Adobe Experience Cloud (Launch), Cloudflare edge/CDN, Drupal + 3 more | Find emails |
| sonicwall.com | #4,222 | Contentstack, Google Tag Manager, HubSpot + 8 more | Find emails |
| nordstrom.com | #4,225 | Fastly, NS1, Varnish | Find emails |
| sky.it | #4,309 | Adobe Experience Cloud (Launch), Akamai Edge DNS, Amazon CloudFront + 6 more | Find emails |
| cbslocal.com | #4,360 | Fastly, Ketch, NS1 + 1 more | Find emails |
| belkin.com | #4,390 | Adyen, Amazon Pay, Cloudflare + 13 more | Find emails |
| ebay.ca | #4,412 | Akamai Bot Manager, Akamai edge/CDN, NS1 | Find emails |
| victoriassecret.com | #4,414 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 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 →