Outage in Let's Encrypt
High API Latency
Resolved Minor
December 09, 2025 - Started 5 days ago
- Lasted 1 day
Incident Report
We are investigating some requests experiencing high latency when making requests to the API.
Components affected
Let's Encrypt acme-v02.api.letsencrypt.org (Production)Need to monitor Let's Encrypt outages?
One place to monitor all your cloud vendors. Get instant alerts when an outage is detected.
Latest Updates ( sorted recent to last )
5 days ago - at 12/09/2025 04:42PM
We are investigating some requests experiencing high latency when making requests to the API.
5 days ago - at 12/09/2025 04:58PM
We have shifted traffic out of high assurance data center 2 so that it is no longer serving requests and API latency looks normal. We are continuing to investigate root cause.
5 days ago - at 12/09/2025 11:05PM
We have shifted traffic back to both data centers and are continuing to monitor for any unusual API responses or latency.
5 days ago - at 12/10/2025 12:28AM
We have reshaped some traffic and continue to monitor for any recurrences of API latency and increases in 503 responses.
Latest Let's Encrypt outages
Production API Disruption - 3 months ago
API Partial Service Disruption - 4 months ago
Let's Encrypt API Outage - 5 months ago
[Staging] API Partial Service Disruption - 7 months ago
API Partial Service Disruption - 7 months ago
Status Aggregator for All Your Third-Party Services
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 4600 services available
Integrations with
