Chainstack incident

Partial outage in London cluster

Minor Resolved

Chainstack experienced a minor incident on May 22, 2026 affecting Arbitrum Global Nodes (Arbitrum Sepolia) and Base Global Nodes (Base Mainnet) and 1 more component, lasting 3h 14m. The incident has been resolved; the full update timeline is below.

Started
May 22, 2026, 04:01 AM UTC
Resolved
May 22, 2026, 07:15 AM UTC
Duration
3h 14m
Detected by Pingoru
May 22, 2026, 04:01 AM UTC

Affected components

Arbitrum Global Nodes (Arbitrum Sepolia)Base Global Nodes (Base Mainnet)BNB Smart Chain Global Nodes (BNB Smart Chain Mainnet)BNB Smart Chain Global Nodes (BNB Smart Chain Testnet)BNB Smart Chain Trader Nodes (BNB Smart Chain Mainnet Archive (Chainstack Cloud, London))Celo Global Nodes (Celo Mainnet)BNB Smart Chain Trader Nodes (BNB Smart Chain Mainnet Full (Chainstack Cloud, London))BNB Smart Chain Trader Nodes (BNB Smart Chain Testnet Full (Chainstack Cloud, London))Ethereum Global Nodes (Ethereum Mainnet)Ethereum Trader Nodes (Ethereum Mainnet Archive (Chainstack Cloud, London))

Update timeline

  1. investigating May 22, 2026, 04:01 AM UTC

    We are currently investigating this incident.

  2. identified May 22, 2026, 04:23 AM UTC

    We are continuing to work on a fix for this incident.

  3. monitoring May 22, 2026, 05:11 AM UTC

    We implemented a fix and are currently monitoring the result.

  4. monitoring May 22, 2026, 05:13 AM UTC

    We implemented a fix and are currently monitoring the result. We're still working on recovering Polygon Mainnet Archive & BSC Testnet

  5. resolved May 22, 2026, 07:15 AM UTC

    This incident has been resolved.