Tracking 54,626 certificates across 273 domains from the public CT logs (crt.sh). We discover subdomains automatically, track issuer history, and surface shadow IT from cert issuance.
| Domain | Certs | Subdomains | Active | Newest | Health | Last Check |
|---|---|---|---|---|---|---|
| gmail.com | 9,773 | 5 | 0 / 9,773 exp | — | UP | |
| microsoft.com | 5,827 | 3,779 | 0 / 5,827 exp | — | UP | |
| shopify.com | 5,252 | 311 | 0 / 5,252 exp | — | UP | |
| fastly.com | 5,245 | 114 | 7 / 5,238 exp | — | UP | |
| cloudflare.com | 4,978 | 3,423 | 0 / 4,978 exp | — | UP | |
| azure.com | 4,502 | 3,139 | 0 / 4,502 exp | — | UP | |
| amazonaws.com | 4,445 | 2,068 | 0 / 4,445 exp | — | UP | |
| twitter.com | 2,650 | 495 | 0 / 2,650 exp | — | UP | |
| playstation.com | 2,579 | 995 | 0 / 2,579 exp | — | UP | |
| stripe.com | 2,321 | 200 | 122 / 2,199 exp | — | UP | |
| netlify.com | 1,821 | 111 | 104 / 1,717 exp | — | UP | |
| dropbox.com | 1,801 | 480 | 198 / 1,603 exp | — | UP | |
| lyft.com | 949 | 46 | 35 / 914 exp | — | UP | |
| icloud.com | 767 | 4,482 | 0 / 767 exp | — | UP | |
| linkedin.com | 623 | 1,772 | 0 / 623 exp | — | UP | |
| substack.com | 598 | 28 | 19 / 579 exp | — | UP | |
| telegram.org | 269 | 24 | 22 / 247 exp | — | UP | |
| bitbucket.io | 226 | 1 | 98 / 128 exp | — | UP |