> For the complete documentation index, see [llms.txt](https://docs.filecoin.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.filecoin.io/networks-and-tools/networks/legacy-networks.md).

# Legacy networks

{% hint style="danger" %}
**LEGACY — DO NOT USE**

These networks are no longer active and may be unavailable. For testing and development, use the [Calibration testnet](/networks-and-tools/networks/calibration.md) or a [local testnet](/networks-and-tools/networks/local-testnet.md).
{% endhint %}

The following networks are no longer operational:

## Nerpanet

The Nerpa test network, often called *Nerpanet*, was designed with tiny sector sizes. This network was for application developers to test the very basic functionality of their applications before moving over to the calibration test network. It was retired on 2021-08-16.

## Spacenet

The Spacenet test network was created for the Interplanetary Consensus (IPC) project. This network was retired on 2023-09-11.

## Wallaby

The Wallaby test network, often just called *Wallaby*, was designed for internal Filecoin developers to test new features before rolling them out to the Hyperspace testnet, and then onto Mainnet. Wallaby was designed to be reset every week. It was retired on 2023-02-07.

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