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

# Get Trunk Health

> Get the health status of a SIP trunk by probing the endpoint with SIP OPTIONS.

### Headers

**authorization** `string` *required*

Your API key for authentication.

### Query Parameters

**phone\_number** `string` *required*

The phone number to check health for. Must be in E.164 format.

### Response

**status** `string`

Health status: `"healthy"`, `"unreachable"`, or `"unchecked"`. Inbound-only trunks show `"unchecked"` since there is no outbound endpoint to probe.

**response\_time\_ms** `number`

Response time of the SIP OPTIONS probe in milliseconds. `null` if unreachable or unchecked.

**checked\_at** `string`

ISO 8601 timestamp of when the health check was performed.

```json Example Request theme={null}
curl -X GET 'https://api.bland.ai/v1/sip/status?phone_number=%2B14150000000' \
  -H "Authorization: Bearer <token>"
```

```json Response theme={null}
{
  "data": {
    "status": "healthy",
    "response_time_ms": 42,
    "checked_at": "2026-03-09T12:00:00Z"
  },
  "errors": null
}
```

***

Docs for agents: [llms.txt](https://docs.bland.ai/llms.txt)


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