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Outage in QuickNode

Arbitrum Mainnet - Block Sync Issue

Resolved Minor
February 26, 2026 - Started about 2 months ago - Lasted about 6 hours
Official incident page

Incident Report

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.
Components affected
QuickNode Mainnet Archive - JSON-RPC API QuickNode Mainnet Archive - Websockets API

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Latest Updates ( sorted recent to last )
RESOLVED about 2 months ago - at 02/26/2026 07:27PM

This incident has been resolved.

MONITORING about 2 months ago - at 02/26/2026 01:54PM

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.

INVESTIGATING about 2 months ago - at 02/26/2026 01:46PM

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.

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