Top SSL Issuers

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

1 Let's Encrypt

105,863 domains

2 Google Trust Services

69,617 domains

3 DigiCert Inc

14,073 domains

4 Amazon

12,900 domains

5 Sectigo Limited

12,645 domains

6 GlobalSign nv-sa

5,356 domains

7 GoDaddy.com, Inc.

4,567 domains

8 ZeroSSL

1,507 domains

9 Internet2

1,242 domains

10 Starfield Technologies, Inc.

1,204 domains

11 DigiCert, Inc.

1,014 domains

12 Actalis S.p.A.

884 domains

13 Hellenic Academic and Research Institutions CA

828 domains

14 Microsoft Corporation

797 domains

15 SSL Corporation

646 domains

16 Gandi SAS

567 domains

17 Corporation Service Company

460 domains

18 Entrust Limited

457 domains

19 Japan Registry Services Co., Ltd.

363 domains

20 Apple Inc.

355 domains