## Get Passive DNS by IP

`client.intel.dns.list(DNSListParamsparams, RequestOptionsoptions?): V4PagePagination<DNS>`

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

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

### Parameters

- `params: DNSListParams`

  - `account_id: string`

    Path param: Identifier.

  - `ipv4?: string`

    Query param

  - `page?: number`

    Query param: Requested page within paginated list of results.

  - `per_page?: number`

    Query param: Maximum number of results requested.

  - `start_end_params?: StartEndParams`

    Query param

    - `end?: string`

      Defaults to the current date.

    - `start?: string`

      Defaults to 30 days before the end parameter value.

### Returns

- `DNS`

  - `count?: number`

    Total results returned based on your search parameters.

  - `page?: number`

    Current page within paginated list of results.

  - `per_page?: number`

    Number of results per page of results.

  - `reverse_records?: Array<ReverseRecord>`

    Reverse DNS look-ups observed during the time period.

    - `first_seen?: string`

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

    - `hostname?: string`

      Hostname that the IP was observed resolving to.

    - `last_seen?: string`

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

### Example

```node
import Cloudflare from 'cloudflare';

const client = new Cloudflare({
  apiToken: process.env['CLOUDFLARE_API_TOKEN'], // This is the default and can be omitted
});

// Automatically fetches more pages as needed.
for await (const dns of client.intel.dns.list({ account_id: '023e105f4ecef8ad9ca31a8372d0c353' })) {
  console.log(dns.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
  }
}
```