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

# List SIP trunks

> Get all SIP trunks owned by the authenticated user

This endpoint returns a list of all SIP trunks associated with your account.

### Response

<ResponseField name="data" type="array">
  Array of SIP trunk objects

  <Expandable title="SIP trunk properties">
    <ResponseField name="id" type="integer">
      The unique identifier of the SIP trunk
    </ResponseField>

    <ResponseField name="phone_number" type="string">
      The SIP extension or phone number (DID) in E.164 format
    </ResponseField>

    <ResponseField name="nickname" type="string">
      A short, human-friendly label for the trunk (or `null` if not set)
    </ResponseField>

    <ResponseField name="sip_username" type="string">
      The username used for SIP authentication
    </ResponseField>

    <ResponseField name="sip_address" type="string">
      The SIP server address
    </ResponseField>

    <ResponseField name="sip_calling_format" type="string">
      The outbound calling number format: `+e164`, `e164`, or `national`
    </ResponseField>

    <ResponseField name="inbound_authorization_type" type="string">
      The inbound authorization method: `auth` (username/password) or `ip` (IP whitelist)
    </ResponseField>

    <ResponseField name="allowed_inbound_ips" type="array">
      Array of whitelisted IP addresses for inbound calls (only when `inbound_authorization_type` is `ip`)
    </ResponseField>

    <ResponseField name="outbound_proxy" type="boolean">
      Whether outbound calls use a fixed proxy IP address
    </ResponseField>

    <ResponseField name="country_code" type="string">
      The ISO 3166-2 country code where the SIP trunk is located
    </ResponseField>

    <ResponseField name="created_at" type="string">
      ISO 8601 timestamp of when the SIP trunk was created
    </ResponseField>

    <ResponseField name="updated_at" type="string">
      ISO 8601 timestamp of when the SIP trunk was last updated
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseExample>
  ```json 200 Response theme={null}
  {
    "data": [
      {
        "id": 42,
        "phone_number": "1000",
        "nickname": "Provider X — Main",
        "sip_username": "myuser",
        "sip_address": "sip.provider.com",
        "sip_calling_format": "+e164",
        "inbound_authorization_type": "auth",
        "allowed_inbound_ips": null,
        "outbound_proxy": false,
        "country_code": "US",
        "created_at": "2026-03-31T10:00:00.000000Z",
        "updated_at": "2026-03-31T10:00:00.000000Z"
      },
      {
        "id": 43,
        "phone_number": "+14155551234",
        "nickname": null,
        "sip_username": "trunk_user",
        "sip_address": "sip.provider.com",
        "sip_calling_format": "e164",
        "inbound_authorization_type": "ip",
        "allowed_inbound_ips": ["203.0.113.10", "198.51.100.20"],
        "outbound_proxy": true,
        "country_code": "US",
        "created_at": "2026-03-31T11:00:00.000000Z",
        "updated_at": "2026-03-31T11:00:00.000000Z"
      }
    ]
  }
  ```
</ResponseExample>