# Base Mainnet Webhook Delivery Delays

- Provider: [Alchemy](https://down.guide/alchemy)
- Level: confirmed
- Impact: Degraded
- lasted 9h 25m
- started 2026-05-21 05:15 UTC
- Base
- id: DWN-a0f2fe73e6
- Official page: https://stspg.io/6y9dq44ln69c

## Updates from Alchemy
### 2026-05-21 05:15 UTC: investigating
Between 05:00 - 07:00 UTC on May 21, 2026, Alchemy's Base Mainnet webhook delivery experienced delays. Customers may have received delayed webhook notifications during this time.

### 2026-05-21 14:40 UTC: resolved
Our system finished backfilling all events around May 21 14:40 UTC. Service has since returned to normal.

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