Starknet Outage History

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Starknet had 6 outages in the last 2 years totaling 9h 9m of downtime — averaging 0.2 incidents per month.

There were 6 Starknet outages since September 15, 2025 totaling 9h 9m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.starknet.io

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
  1. investigating Apr 19, 2026, 03:11 AM UTC

    We are currently investigating this issue.

  2. identified Apr 19, 2026, 03:38 AM UTC

    The issue has been identified and a fix is being implemented.

  3. 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
  1. investigating Mar 21, 2026, 11:59 AM UTC

    Starknet is taking longer than expected to produce a block.

  2. resolved Mar 21, 2026, 12:01 PM UTC

    This incident has been resolved.

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
  1. investigating Nov 25, 2025, 08:29 AM UTC

    We are currently investigating this issue.

  2. investigating Nov 25, 2025, 09:01 AM UTC

    We are continuing to investigate this issue.

  3. identified Nov 25, 2025, 09:01 AM UTC

    The issue has been identified and a fix is being implemented.

  4. identified Nov 25, 2025, 01:39 PM UTC

    We are continuing to work on a fix for this issue.

  5. resolved Nov 25, 2025, 01:40 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice September 15, 2025

Slow block production

Detected by Pingoru
Sep 15, 2025, 02:07 PM UTC
Resolved
Sep 15, 2025, 02:12 PM UTC
Duration
5m
Affected: Starknet Mainnet
Timeline · 2 updates
  1. monitoring Sep 15, 2025, 02:07 PM UTC

    Starknet didn't produce blocks for 9 min, due to a timeout in one of the services. The team is monitored the continous operation and a bugfix to prevent this incident from repeating again will be released soon.

  2. resolved Sep 15, 2025, 02:12 PM UTC

    This incident has been resolved.

Read the full incident report →