QuickNode incident

Arbitrum Mainnet - Elevated 503 Errors

Minor Resolved View vendor source →

QuickNode experienced a minor incident on August 21, 2026 affecting Mainnet Classic — JSON-RPC API and Mainnet Classic — WebSocket API, lasting 7h 3m. The incident has been resolved; the full update timeline is below.

Started
Aug 21, 2026, 10:30 AM UTC
Resolved
Aug 21, 2026, 05:34 PM UTC
Duration
7h 3m
Detected by Pingoru
Aug 21, 2026, 10:30 AM UTC

Affected components

Mainnet Classic — JSON-RPC APIMainnet Classic — WebSocket API

Update timeline

  1. investigating Aug 21, 2026, 02:15 PM UTC

    We are investigating the degradation of Arbitrum Mainnet archive requests. Users may experience elevated latenc, 503 responses, and API errors during this time.

  2. monitoring Aug 21, 2026, 03:33 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Aug 21, 2026, 05:34 PM UTC

    This incident has been resolved.