Arbitrum Mainnet - Block Sync Issue

Incident Report for Quicknode

Resolved

This incident has been resolved.
Posted Feb 26, 2026 - 19:27 UTC

Monitoring

After investigation, the block sync issue at block 436,172,925 has been isolated to specific nodes. Service should now be operational for all customers. We are continuing to monitor for stability.
Posted Feb 26, 2026 - 13:54 UTC

Investigating

We are currently experiencing an issue with our Arbitrum mainnet infrastructure stuck at block 436,172,925. Customers may be unable to query the latest blocks or experience delays in transaction confirmations. Our engineering team is actively working to resolve the sync issue and will provide the next update by 3PM UTC or sooner.
Posted Feb 26, 2026 - 13:46 UTC
This incident affected: Arbitrum (Mainnet Classic — JSON-RPC API, Mainnet Classic — WebSocket API, Mainnet — Webhooks, Mainnet — Streams).
← Current Status Powered by Atlassian Statuspage