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Quicknode

Arbitrum Mainnet - Elevated 503 and API Errors

Minor Impact Monitoring Ongoing May 20, 2026

Incident Lifecycle

Investigating Monitoring

Incident Timeline

Monitoring
A fix has been implemented and we are monitoring the results.
May 20, 2026 at 8:34 PM UTC
Investigating
We are investigating an elevated rate of 503 and API errors affecting Arbitrum Mainnet. Our team has identified an issue with backend connectivity and is actively working to restore full service. We will provide updates as more information becomes available.
May 20, 2026 at 7:43 PM UTC
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