Chainstack incident

Arbitrum Nitro Sepolia degraded performance in LAX region

Minor Resolved

Chainstack experienced a minor incident on July 31, 2026 affecting Arbitrum Global Nodes (Arbitrum Sepolia), lasting 26m. The incident has been resolved; the full update timeline is below.

Started
Jul 31, 2026, 03:17 AM UTC
Resolved
Jul 31, 2026, 03:43 AM UTC
Duration
26m
Detected by Pingoru
Jul 31, 2026, 03:17 AM UTC

Affected components

Arbitrum Global Nodes (Arbitrum Sepolia)

Update timeline

  1. investigating Jul 31, 2026, 03:17 AM UTC

    The nodes may return 503 errors. We are currently investigating this incident.

  2. monitoring Jul 31, 2026, 03:23 AM UTC

    We implemented a fix and are currently monitoring the result.

  3. resolved Jul 31, 2026, 03:43 AM UTC

    This incident has been resolved.