Top SSL Issuers

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

1 Let's Encrypt

107,904 domains

2 Google Trust Services

70,264 domains

3 DigiCert Inc

14,489 domains

4 Sectigo Limited

13,680 domains

5 Amazon

12,968 domains

6 GlobalSign nv-sa

5,444 domains

7 GoDaddy.com, Inc.

4,702 domains

8 ZeroSSL

1,537 domains

9 Internet2

1,298 domains

10 Starfield Technologies, Inc.

1,214 domains

11 DigiCert, Inc.

1,033 domains

12 Actalis S.p.A.

936 domains

13 Microsoft Corporation

920 domains

14 Hellenic Academic and Research Institutions CA

851 domains

15 SSL Corporation

650 domains

16 Gandi SAS

574 domains

17 Corporation Service Company

460 domains

18 Entrust Limited

458 domains

19 Apple Inc.

442 domains

20 Japan Registry Services Co., Ltd.

364 domains