Starknet Outage History

Starknet had 5 outages in the last 2 years totaling 9h 4m of downtime — averaging 0.2 incidents per month.

There were 5 Starknet outages since October 10, 2025 totaling 9h 4m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.starknet.io

Critical May 26, 2026

Starknet testnet (Sepolia) – slow block creation alert

Detected by Pingoru: May 26, 2026, 02:54 AM UTC
Resolved: May 26, 2026, 03:39 AM UTC
Duration: 44m

Affected: Starknet Testnet (Sepolia)

Timeline · 2 updates

investigating May 26, 2026, 02:54 AM UTC

Starknet is taking longer than expected to produce a block.
resolved May 26, 2026, 03:39 AM UTC

This incident has been resolved.

Read the full incident report →

Critical April 19, 2026

Inconsistency error on Starknet testnet

Detected by Pingoru: Apr 19, 2026, 03:11 AM UTC
Resolved: Apr 19, 2026, 06:18 AM UTC
Duration: 3h 7m

Affected: Starknet Testnet (Sepolia)

Timeline · 3 updates

investigating Apr 19, 2026, 03:11 AM UTC

We are currently investigating this issue.
identified Apr 19, 2026, 03:38 AM UTC

The issue has been identified and a fix is being implemented.
resolved Apr 19, 2026, 06:18 AM UTC

This incident has been resolved.

Read the full incident report →

Critical March 21, 2026

Starknet mainnet – slow block creation alert

Detected by Pingoru: Mar 21, 2026, 11:59 AM UTC
Resolved: Mar 21, 2026, 12:01 PM UTC
Duration: 1m

Affected: Starknet Mainnet

Timeline · 2 updates

investigating Mar 21, 2026, 11:59 AM UTC

Starknet is taking longer than expected to produce a block.
resolved Mar 21, 2026, 12:01 PM UTC

This incident has been resolved.

Read the full incident report →

Notice March 18, 2026

Planned Maintainance - Starknet 0.14.1-committer upgrade

Detected by Pingoru: Mar 18, 2026, 07:30 AM UTC
Resolved: Mar 18, 2026, 07:30 AM UTC
Duration: —

Timeline · 1 update

resolved Mar 18, 2026, 09:55 AM UTC

Starknet mainnet was down for 11 minutes, due to a planned upgrade - the 0.14.1-committer upgrade

Read the full incident report →

Critical November 25, 2025

Block on Starknet testnet can't be proven

Detected by Pingoru: Nov 25, 2025, 08:29 AM UTC
Resolved: Nov 25, 2025, 01:40 PM UTC
Duration: 5h 11m

Affected: Starknet Testnet (Sepolia)

Timeline · 5 updates

investigating Nov 25, 2025, 08:29 AM UTC

We are currently investigating this issue.
investigating Nov 25, 2025, 09:01 AM UTC

We are continuing to investigate this issue.
identified Nov 25, 2025, 09:01 AM UTC

The issue has been identified and a fix is being implemented.
identified Nov 25, 2025, 01:39 PM UTC

We are continuing to work on a fix for this issue.
resolved Nov 25, 2025, 01:40 PM UTC

This incident has been resolved.

Read the full incident report →