> ## Documentation Index
> Fetch the complete documentation index at: https://developers.orchestrasolutions.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Outbound IP Addresses

> The IP addresses Orchestra uses for outbound calls, for whitelisting with payment providers and other third parties.

When Orchestra calls a payment provider or another third party on your behalf, the request originates from Orchestra's infrastructure. Some providers only accept traffic from addresses they have whitelisted. If a provider rejects Orchestra's calls with a 401, 403 or a "not allowed" style error, ask them to whitelist the addresses below.

## Current IP Addresses

```text theme={null}
3.248.51.104
18.203.164.12
99.80.247.122
34.255.150.112
```

<Warning>
  This list **may change**. Contact [support@orchestrasolutions.com](mailto:support@orchestrasolutions.com) to confirm the current list before relying on it for a whitelist configuration, especially for a production integration.
</Warning>

## Related

* [Gateway-Specific Requirements](/guides/rest-api/gateway-requirements). Additional parameters and configuration for specific payment gateways.
* [Adding a Payment Provider](/getting-started/add-payment-provider). Connect a payment provider account to Orchestra.