API Degraded Performance

Let's Encrypt's production API is experiencing degraded performance. Some clients may encounter 400 and 500 error responses. Most clients are still succeeding.

We re-routed traffic to bring success rates back to normal after an upstream network event disrupted traffic between two datacenters.

We're operating normally, but with reduced redundancy. We continue to work with our upstream ISP to identify and resolve the issue.

Starting shortly, we will be performing maintenance on networking equipment in High Assurance Datacenter 1. Some clients may experience errors while traffic shifting occurs.

We're receiving reports of increased timeouts to our API following a swap of our active datacenters. We are investigating and reverting that change.

API traffic has been swapped back between datacenters.

After monitoring we have confirmed our API is operational.

We're noticing elevated 503s and slow responses. Investigating.