Arbitrum - Notice history

All systems operational

This page covers status and maintenance information for Arbitrum Networks including: Arbitrum One, Arbitrum Nova, Arbitrum Sepolia, and the Stylus Testnet. Arbiscan status updates and details for Arbitrum One and Nova can be found on the official Arbiscan status page, which will include information on planned outages.

For the status of network upgrades (e.g. ArbOS versions), please visit the network upgrades page.

Operational
100% - uptime

ARB1 - Batch Poster - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

ARB1 - Validator - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

ARB1 - Feed - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

ARB1 - Arbiscan - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 99.66%Feb · 99.97%

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Dec 2025
Jan 2026
Feb 2026
Operational

NOVA - Sequencer - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

NOVA - Batch Poster - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

NOVA - Validator - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

NOVA - Feed - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026
Operational

SEPOLIA - Sequencer - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

SEPOLIA - Batch Poster - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

SEPOLIA - Validator - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

SEPOLIA - Feed - Operational

100% - uptime
Dec 2025 · 100.0%Jan 2026 · 100.0%Feb · 100.0%

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Dec 2025
Jan 2026
Feb 2026

Notice history

Feb 2026

ARB1 - Arbiscan outage
  • Resolved
    Resolved

    ARB1 - Arbiscan is now operational! This update was created by an automated monitoring service.

  • Investigating
    Investigating

    ARB1 - Arbiscan cannot be accessed at the moment. More details, including information about planned outages, can be found on the Arbiscan status page. This incident was created by an automated monitoring service.

ARB1 - Arbiscan outage
  • Resolved
    Resolved

    ARB1 - Arbiscan is now operational! This update was created by an automated monitoring service.

  • Investigating
    Investigating

    ARB1 - Arbiscan cannot be accessed at the moment. More details, including information about planned outages, can be found on the Arbiscan status page. This incident was created by an automated monitoring service.

ARB1 - Arbiscan outage
  • Resolved
    Resolved

    ARB1 - Arbiscan is now operational! This update was created by an automated monitoring service.

  • Investigating
    Investigating

    ARB1 - Arbiscan cannot be accessed at the moment. More details, including information about planned outages, can be found on the Arbiscan status page. This incident was created by an automated monitoring service.

Delays in posting an assertion.
  • Resolved
    Resolved

    This incident has been resolved. An assertion was posted and all network components are fully operational.

  • Identified
    Identified
    We are continuing to work on a fix for this incident.
  • Investigating
    Investigating
    We are currently investigating this incident.
ARB1 - Arbiscan outage
  • Resolved
    Resolved

    ARB1 - Arbiscan is now operational! This update was created by an automated monitoring service.

  • Investigating
    Investigating

    ARB1 - Arbiscan cannot be accessed at the moment. More details, including information about planned outages, can be found on the Arbiscan status page. This incident was created by an automated monitoring service.

Jan 2026

ARB1 - Arbiscan outage
  • Resolved
    Resolved

    ARB1 - Arbiscan is now operational! This update was created by an automated monitoring service.

  • Investigating
    Investigating

    ARB1 - Arbiscan cannot be accessed at the moment. More details, including information about planned outages, can be found on the Arbiscan status page. This incident was created by an automated monitoring service.

ARB1 - Arbiscan outage
  • Resolved
    Resolved

    ARB1 - Arbiscan is now operational! This update was created by an automated monitoring service.

  • Investigating
    Investigating

    ARB1 - Arbiscan cannot be accessed at the moment. More details, including information about planned outages, can be found on the Arbiscan status page. This incident was created by an automated monitoring service.

ARB1 - Arbiscan outage
  • Resolved
    Resolved

    ARB1 - Arbiscan is now operational! This update was created by an automated monitoring service.

  • Investigating
    Investigating

    ARB1 - Arbiscan cannot be accessed at the moment. More details, including information about planned outages, can be found on the Arbiscan status page. This incident was created by an automated monitoring service.

Batch posting issue
  • Resolved
    Resolved
    This incident has been resolved.
  • Investigating
    Investigating

    An infrastructure issue temporarily prevented posting batches to mainnet, we are currently investigating this incident.

Dec 2025

No notices reported this month

Dec 2025 to Feb 2026

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