# Elevated 5xx Suppression List API error rates and latency for some SparkPost customers (US hosted only)

- Provider: [SparkPost](https://down.guide/sparkpost)
- Level: confirmed
- Impact: Degraded
- lasted 1h 7m
- started 2026-05-11 18:55 UTC
- Suppression List API - USA
- eu, us
- id: DWN-f37686ce6d
- Official page: https://stspg.io/09ccmn7kj1sd

## Updates from SparkPost
### 2026-05-11 18:55 UTC: identified
We are experiencing an elevated level of errors and latency on the Suppression List API for some SparkPost customers. Please retry any 5xx error.
Note: This issue does not impact SparkPost customers hosted in the EU.

### 2026-05-11 19:46 UTC: monitoring
A fix has been implemented and we are monitoring the results.

### 2026-05-11 20:02 UTC: resolved
This incident has been resolved.

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