# Connecting to the Network

Dag4.js provides reasonable configuration values by default for accessing Constellation Network versions 1.0 and 2.0.

#### Minimal network configuration[​](https://docs.constellationnetwork.io/hypergraph/dag4-network#minimal-network-configuration) <a href="#minimal-network-configuration" id="minimal-network-configuration"></a>

```typescript
dag4.account.connect({
  networkVersion: '2.0',
  testnet: true
});
```

#### Custom network configuration[​](https://docs.constellationnetwork.io/hypergraph/dag4-network#custom-network-configuration) <a href="#custom-network-configuration" id="custom-network-configuration"></a>

You can provide custom values for each the three network API endpoints to set up a custom connection.

```typescript
dag4.account.connect({
  networkVersion: '2.0',
  beUrl: 'https://be-mainnet.constellationnetwork.io/',
  l0Url: 'http://13.52.246.74:9000',
  l1Url: 'http://13.52.246.74:9010'
});
```

#### Default Endpoints[​](https://docs.constellationnetwork.io/hypergraph/dag4-network#default-endpoints) <a href="#default-endpoints" id="default-endpoints"></a>

The following endpoints are used by default by Dag4.

**IntegrationNet**[**​**](https://docs.constellationnetwork.io/hypergraph/dag4-network#20-integrationnet)

* Block Explorer API: [https://be-integrationnet.constellationnetwork.io](https://be-integrationnet.constellationnetwork.io/)
* L0 API: [https://l0-lb-integrationnet.constellationnetwork.io](https://l0-lb-integrationnet.constellationnetwork.io/)
* L1 API: [https://l1-lb-integrationnet.constellationnetwork.io](https://l1-lb-integrationnet.constellationnetwork.io/)

```
dag4.account.connect({
  id: 'integration2',
  networkVersion: '2.0',
  beUrl: 'https://be-integrationnet.constellationnetwork.io',
  l0Url: 'https://l0-lb-integrationnet.constellationnetwork.io',
  l1Url: 'https://l1-lb-integrationnet.constellationnetwork.io'
}, false);
```

**MainNet**[**​**](https://docs.constellationnetwork.io/hypergraph/dag4-network#20-mainnet)

* Block Explorer API: [https://be-mainnet.constellationnetwork.io](https://be-mainnet.constellationnetwork.io/)
* L0 API: [https://l0-lb-mainnet.constellationnetwork.io](https://l0-lb-mainnet.constellationnetwork.io/)
* L1 API: [https://l1-lb-mainnet.constellationnetwork.io](https://l1-lb-mainnet.constellationnetwork.io/)

```
dag4.account.connect({
  networkVersion: '2.0',
  testnet: false
});
```

{% hint style="warning" %}
TestNet usage is not recommended as it is expected to be unstable. Use IntegrationNet as the preferred testnet.&#x20;
{% endhint %}

**TestNet**[**​**](https://docs.constellationnetwork.io/hypergraph/dag4-network#20-testnet)

* Block Explorer API: [https://be-testnet.constellationnetwork.io](https://be-testnet.constellationnetwork.io/)
* L0 API: [https://l0-lb-testnet.constellationnetwork.io](https://l0-lb-testnet.constellationnetwork.io/)
* L1 API: [https://l1-lb-testnet.constellationnetwork.io](https://l1-lb-testnet.constellationnetwork.io/)

```typescript
dag4.account.connect({
  networkVersion: '2.0',
  testnet: true
});
```