## Get Passive DNS by IP

`intel.dns.list(DNSListParams**kwargs)  -> SyncV4PagePagination[Optional[DNS]]`

**get** `/accounts/{account_id}/intel/dns`

Gets a list of all the domains that have resolved to a specific IP address.

### Parameters

- `account_id: str`

  Identifier.

- `ipv4: Optional[str]`

- `page: Optional[float]`

  Requested page within paginated list of results.

- `per_page: Optional[float]`

  Maximum number of results requested.

- `start_end_params: Optional[StartEndParams]`

  - `end: Optional[Union[null, null]]`

    Defaults to the current date.

  - `start: Optional[Union[null, null]]`

    Defaults to 30 days before the end parameter value.

### Returns

- `class DNS: …`

  - `count: Optional[float]`

    Total results returned based on your search parameters.

  - `page: Optional[float]`

    Current page within paginated list of results.

  - `per_page: Optional[float]`

    Number of results per page of results.

  - `reverse_records: Optional[List[ReverseRecord]]`

    Reverse DNS look-ups observed during the time period.

    - `first_seen: Optional[date]`

      First seen date of the DNS record during the time period.

    - `hostname: Optional[str]`

      Hostname that the IP was observed resolving to.

    - `last_seen: Optional[date]`

      Last seen date of the DNS record during the time period.

### Example

```python
import os
from cloudflare import Cloudflare

client = Cloudflare(
    api_token=os.environ.get("CLOUDFLARE_API_TOKEN"),  # This is the default and can be omitted
)
page = client.intel.dns.list(
    account_id="023e105f4ecef8ad9ca31a8372d0c353",
)
page = page.result.items[0]
print(page.count)
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "count": 1,
    "page": 1,
    "per_page": 20,
    "reverse_records": [
      {
        "first_seen": "2021-04-01",
        "hostname": "hostname",
        "last_seen": "2021-04-30"
      }
    ]
  },
  "result_info": {
    "count": 1,
    "page": 1,
    "per_page": 20,
    "total_count": 2000
  }
}
```