<p>You can check the byron or shelley genesis files for <code>protocolMagic</code> or <code>networkMagic</code> respectively.</p>
<p>Genesis files for each network can be found here: <a href="https://book.world.dev.cardano.org/environments.html" rel="noreferrer">https://book.world.dev.cardano.org/environments.html</a></p>

CC BY-SA 4.0
2022-09-02T16:15:12.897Z
`networkMagic` from the Shelley genesis files: Preview: `2`, Preprod: `1`
eddex
CC BY-SA 4.0
2022-09-02T15:30:54.373Z
2022-09-02T15:30:54.373Z
james
<p>The cardano testnet has a protocol/testnet magic value of <code>1097911063</code>.</p>
<p>Where do I find this value for the preprod and preview test networks?</p>

<testnet><preprod>
What are the protocol magic values for the preview and preprod test networks?
# What are the protocol magic values for the preview and preprod test networks?

(Asked by: username_0 on 2022-09-02)

The cardano testnet has a protocol/testnet magic value of `1097911063`.

Where do I find this value for the preprod and preview test networks?

**Tags:** testnet, preprod

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## 1 answers

### Answer by username_1 on 2022-09-02. Score: 6 | Accepted answer

You can check the byron or shelley genesis files for `protocolMagic` or `networkMagic` respectively.

Genesis files for each network can be found here: <https://book.world.dev.cardano.org/environments.html>

> **Comments:**
> **username_0**: `networkMagic` from the Shelley genesis files: Preview: `2`, Preprod: `1`  

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