Top SSL Issuers

Certificate authorities that issue the most SSL certificates across tracked domains.

1 Let's Encrypt

186,861 domains

2 Google Trust Services

91,667 domains

3 Sectigo Limited

36,532 domains

4 DigiCert Inc

19,146 domains

5 Amazon

14,253 domains

6 GlobalSign nv-sa

8,333 domains

7 GoDaddy.com, Inc.

5,783 domains

8 ZeroSSL

2,767 domains

9 GoDaddy.com

2,742 domains

10 ZeroSSL GmbH

2,665 domains

11 Internet2

1,709 domains

12 Starfield Technologies, Inc.

1,356 domains

13 Actalis S.p.A.

1,231 domains

14 Microsoft Corporation

1,226 domains

15 DigiCert, Inc.

1,103 domains

16 GoGetSSL

891 domains

17 Hellenic Academic and Research Institutions CA

858 domains

18 Apple Inc.

749 domains

19 SSL Corporation

719 domains

20 Gandi SAS

636 domains