Page displays information about "sdf" SSL certificate issuing authority and the list of the most popular web sites secured by this provider.
| Website | Rank |
|---|
| Provider | Sites Secured |
|---|---|
| Let's Encrypt | 126,487 |
| COMODO CA Limited | 32,267 |
| CloudFlare, Inc. | 25,201 |
| DigiCert Inc | 23,618 |
| cPanel, Inc. | 20,937 |
| Sectigo Limited | 19,844 |
| Google Trust Services | 16,373 |
| GoDaddy.com, Inc. | 10,058 |
| GlobalSign nv-sa | 8,604 |
| Amazon | 3,977 |
| Starfield Technologies, Inc. | 3,816 |
| Unizeto Technologies S.A. | 2,535 |
| Entrust, Inc. | 840 |
| Microsoft Corporation | 762 |
| Gandi | 383 |