Top SSL Issuers

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

1 Let's Encrypt

108,473 domains

2 Google Trust Services

70,625 domains

3 DigiCert Inc

14,517 domains

4 Sectigo Limited

13,714 domains

5 Amazon

12,987 domains

6 GlobalSign nv-sa

5,462 domains

7 GoDaddy.com, Inc.

4,720 domains

8 ZeroSSL

1,542 domains

9 Internet2

1,301 domains

10 Starfield Technologies, Inc.

1,222 domains

11 DigiCert, Inc.

1,036 domains

12 Actalis S.p.A.

938 domains

13 Microsoft Corporation

923 domains

14 Hellenic Academic and Research Institutions CA

851 domains

15 SSL Corporation

651 domains

16 Gandi SAS

575 domains

17 Corporation Service Company

461 domains

18 Entrust Limited

458 domains

19 Apple Inc.

444 domains

20 Japan Registry Services Co., Ltd.

364 domains