# Optimism Mainnet JSON-RPC API partial outage

- Provider: [Infura](https://down.guide/infura)
- Level: confirmed
- Impact: Partial outage
- lasted 1h 28m
- started 2026-07-22 07:22 UTC
- Optimism Mainnet HTTPS JSON-RPC API
- id: DWN-3a55a24a20
- Official page: https://stspg.io/g5h0zhk797p3

## Updates from Infura
### 2026-07-22 07:22 UTC: investigating
We are aware of a partial outage of some of our Optimism Mainnet JSON-RPC API endpoints affecting a limited portion of our users. At the moment, the outage is limited to the listed components, which may be intermittently unavailable. We are currently investigating to pinpoint a root cause and remediate.

### 2026-07-22 07:27 UTC: identified
The issue has been identified and a fix is being implemented.

### 2026-07-22 08:25 UTC: monitoring
A fix has been implemented and we are monitoring the results.

### 2026-07-22 08:50 UTC: resolved
This incident has been resolved.

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