DigiCert New IPv4 and IPv6 addresses

Please be informed that effective 10 March 2026 at 16:00 UTC, DigiCert will begin adding new IPv4 addresses and assigning dedicated IPv6 address ranges for the following services:

• Online Certificate Status Protocol (OCSP)

• Certificate Revocation List (CRL)

• Other DigiCert services

Action Required

If you or your customers use outbound traffic allowlists (such as firewalls or proxy configurations), you must update your allowlist to include the new IP addresses before 10 March 2026.

Failure to update the allowlist accordingly may result in service disruptions.

New IP Addresses to Allowlist

IPv4

23.11.38.161
23.11.39.161
23.11.40.157
23.11.41.157
23.11.32.159
23.11.33.159
23.11.36.157
23.11.37.157
23.11.34.158
23.11.35.158

IPv6

2600:14e1:18:6d::/64
2600:14e1:1c:6d::/64
2600:14e1:20:6d::/64
2600:14e1:24:6d::/64
2600:14e1:0:6d::/64
2600:14e1:4:6d::/64
2600:14e1:10:6d::/64
2600:14e1:14:6d::/64
2600:14e1:8:6d::/64
2600:14e1:c:6d::/64
2606:4700:7::1fb
2a06:98c1:58::1fb
2606:4700:7::1fd
2a06:98c1:58::1fd

Partners may refer to the DigiCert Certificate Status IP Addresses for the complete table of DigiCert IP addresses, new and old, and for more information about their effect on your digital certificate environment.

Please ensure that all the above IP addresses are added to your allowlist to maintain uninterrupted DigiCert service operations.