Chainstack incident

Arbitrum Mainnet - Degraded Performance Across Multiple Regions

Minor Resolved

Chainstack experienced a minor incident on May 20, 2026 affecting Arbitrum Global Nodes (Arbitrum One Mainnet), lasting 5h 36m. The incident has been resolved; the full update timeline is below.

Started
May 20, 2026, 07:57 PM UTC
Resolved
May 21, 2026, 01:34 AM UTC
Duration
5h 36m
Detected by Pingoru
May 20, 2026, 07:57 PM UTC

Affected components

Arbitrum Global Nodes (Arbitrum One Mainnet)

Update timeline

  1. investigating May 20, 2026, 07:57 PM UTC

    We are currently investigating this incident.

  2. monitoring May 20, 2026, 09:14 PM UTC

    We implemented a fix and are currently monitoring the result.

  3. resolved May 21, 2026, 01:34 AM UTC

    This incident has been resolved.