# Reverse DNS

## Show DNS Firewall Cluster Reverse DNS

`client.DNSFirewall.ReverseDNS.Get(ctx, dnsFirewallID, query) (*ReverseDNSGetResponse, error)`

**get** `/accounts/{account_id}/dns_firewall/{dns_firewall_id}/reverse_dns`

Show reverse DNS configuration (PTR records) for a DNS Firewall cluster

### Parameters

- `dnsFirewallID string`

  Identifier.

- `query ReverseDNSGetParams`

  - `AccountID param.Field[string]`

    Identifier.

### Returns

- `type ReverseDNSGetResponse struct{…}`

  - `PTR map[string, string]`

    Map of cluster IP addresses to PTR record contents

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/dns_firewall"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIToken("Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY"),
  )
  reverseDNS, err := client.DNSFirewall.ReverseDNS.Get(
    context.TODO(),
    "023e105f4ecef8ad9ca31a8372d0c353",
    dns_firewall.ReverseDNSGetParams{
      AccountID: cloudflare.F("023e105f4ecef8ad9ca31a8372d0c353"),
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", reverseDNS.PTR)
}
```

#### 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": {
    "ptr": {
      "foo": "string"
    }
  }
}
```

## Update DNS Firewall Cluster Reverse DNS

`client.DNSFirewall.ReverseDNS.Edit(ctx, dnsFirewallID, params) (*ReverseDNSEditResponse, error)`

**patch** `/accounts/{account_id}/dns_firewall/{dns_firewall_id}/reverse_dns`

Update reverse DNS configuration (PTR records) for a DNS Firewall cluster

### Parameters

- `dnsFirewallID string`

  Identifier.

- `params ReverseDNSEditParams`

  - `AccountID param.Field[string]`

    Path param: Identifier.

  - `PTR param.Field[map[string, string]]`

    Body param: Map of cluster IP addresses to PTR record contents

### Returns

- `type ReverseDNSEditResponse struct{…}`

  - `PTR map[string, string]`

    Map of cluster IP addresses to PTR record contents

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/dns_firewall"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIToken("Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY"),
  )
  response, err := client.DNSFirewall.ReverseDNS.Edit(
    context.TODO(),
    "023e105f4ecef8ad9ca31a8372d0c353",
    dns_firewall.ReverseDNSEditParams{
      AccountID: cloudflare.F("023e105f4ecef8ad9ca31a8372d0c353"),
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response.PTR)
}
```

#### 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": {
    "ptr": {
      "foo": "string"
    }
  }
}
```