Intermittent Connectivity Issues with Salesforce and Pardot API
Incident Report for Pardot
The Salesforce team has successfully mitigated the impact, and continues to monitor health metrics.

User Impact: Beginning at 1453 UTC, Pardot began seeing intermittent API authentication issues with Salesforce login services. End of impact at 1804 UTC.
Posted Jun 09, 2021 - 15:24 EDT
The Salesforce team detected intermittent connectivity issues due to a third-party DNS provider. A fix has been implemented and we are continuing to monitor the effect on our services.

For more information, please check Intermittent Connectivity Issues Across Multiple Salesforce Services.
Posted Jun 09, 2021 - 14:48 EDT