Custom Hostnames API increased latency for SSL for SaaS Customers

Incident Report for Cloudflare

Resolved

This incident has been resolved.
Posted Sep 15, 2025 - 00:37 UTC

Monitoring

The fix has been implemented and we are currently monitoring the results.
Posted Sep 14, 2025 - 23:04 UTC

Identified

The cause of this issue has been identified and we are in the process of deploying the fix.
Posted Sep 14, 2025 - 19:14 UTC

Investigating

Cloudflare is investigating Custom Hostnames API increased latency and delays in validating SSL certificates.
Posted Sep 13, 2025 - 15:39 UTC

Update

We are continuing to work on a fix for this issue.
Posted Sep 12, 2025 - 20:15 UTC

Update

We are continuing to work on a fix for this issue.
Posted Sep 12, 2025 - 11:33 UTC

Identified

Cloudflare has identified an issue with our API which potentially impacts multiple customers: Performing bulk requests to our Custom Hostnames API endpoint might return unexpected timeouts, although only observed on a small percentage of requests.
This does not affect the serving of cached files via the Cloudflare CDN or other security features at the Cloudflare Edge.
We are working to resolve the issue, more updates to follow.
Posted Sep 12, 2025 - 10:38 UTC
This incident affected: Cloudflare Sites and Services (SSL Certificate Provisioning).