# Network › IP addresses › Reverse DNS API

> Part of the OVHcloud developer hub. Index of every page and section: https://developers.eu.ovhcloud.com/llms.txt
> The Network product's sections: https://developers.eu.ovhcloud.com/reference/network/llms.txt
> Everything in one file: https://developers.eu.ovhcloud.com/llms-full.txt

> 8 operations of the OVHcloud API. Calls carry `authorization: Bearer $OVH_TOKEN`; the EU host is shown, Canada and the United States answer on api.ca.ovhcloud.com and api.us.ovhcloud.com.

Page: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/

OpenAPI v1: https://api.eu.ovhcloud.com/1.0/__schemas/developer-hub-navigation/network/ip-addresses/reverse-dns.json?format=openapi3
OpenAPI v2: https://api.eu.ovhcloud.com/v2/__schemas/developer-hub-navigation/network/ip-addresses/reverse-dns.json?format=openapi3

## Operations

- `GET /ip/{ip}/reverse` — List reverses
- `GET /ip/{ip}/delegation` — List reverse delegations
- `GET /ip/{ip}/reverse/{ipReverse}` — Get a reverse
- `GET /ip/{ip}/delegation/{target}` — Get a reverse delegation
- `POST /ip/{ip}/reverse` — Create a reverse
- `POST /ip/{ip}/delegation` — Create a reverse delegation
- `DELETE /ip/{ip}/reverse/{ipReverse}` — Delete a reverse
- `DELETE /ip/{ip}/delegation/{target}` — Delete a reverse delegation

## List reverses

`GET /1.0/ip/{ip}/reverse`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#get-ip-ip-reverse

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:reverse/get`

List reverses. Returns the addresses of the block that have a reverse DNS (PTR) record, not the reverse names themselves.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | ip[] | successful operation |

```json
[
  "192.0.2.0"
]
```

### Example

```bash
curl -X GET \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/reverse" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN"
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

result = client.get("/ip/{ip}/reverse")

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

$result = $ovh->get("/ip/{ip}/reverse");

print_r($result);
?>
```

## List reverse delegations

`GET /1.0/ip/{ip}/delegation`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#get-ip-ip-delegation

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:delegation/get`

List reverse delegations. Returns the name servers the reverse zone of the IPv6 block is delegated to. Reverse delegation applies to IPv6 blocks only.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | string[] | successful operation |

```json
[
  "string"
]
```

### Example

```bash
curl -X GET \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/delegation" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN"
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

result = client.get("/ip/{ip}/delegation")

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

$result = $ovh->get("/ip/{ip}/delegation");

print_r($result);
?>
```

## Get a reverse

`GET /1.0/ip/{ip}/reverse/{ipReverse}`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#get-ip-ip-reverse-ipreverse

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:reverse/get`

Get a reverse. Returns the reverse DNS (PTR) name set on this address of the block, with the address itself.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |
| `ipReverse` | path | ip | yes | IP address (e.g., 192.0.2.0) |

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | ip.ReverseIp | successful operation |

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `ipReverse` | ip | read-only | IP address (e.g., 192.0.2.0) |
| `reverse` | string | read-only |  |

```json
{
  "ipReverse": "192.0.2.0",
  "reverse": "string"
}
```

### Example

```bash
curl -X GET \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/reverse/{ipReverse}" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN"
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

result = client.get("/ip/{ip}/reverse/{ipReverse}")

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

$result = $ovh->get("/ip/{ip}/reverse/{ipReverse}");

print_r($result);
?>
```

## Get a reverse delegation

`GET /1.0/ip/{ip}/delegation/{target}`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#get-ip-ip-delegation-target

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:delegation/get`

Get a reverse delegation. Returns the name server that this delegation points the reverse zone of the IPv6 block to.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |
| `target` | path | string | yes | NS target for delegation |

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | ip.ReverseDelegation | successful operation |

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `target` | string | read-only | NS target for delegation |

```json
{
  "target": "string"
}
```

### Example

```bash
curl -X GET \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/delegation/{target}" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN"
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

result = client.get("/ip/{ip}/delegation/{target}")

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

$result = $ovh->get("/ip/{ip}/delegation/{target}");

print_r($result);
?>
```

## Create a reverse

`POST /1.0/ip/{ip}/reverse`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#post-ip-ip-reverse

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:reverse/create`

Create a reverse. Sets the reverse DNS name of one address of the block. The name must resolve to that address.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |

### Request body (required)

Type: `object`

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `ipReverse` | ip | yes | IP address (e.g., 192.0.2.0) |
| `reverse` | string | yes |  |

```json
{
  "ipReverse": "192.0.2.0",
  "reverse": "string"
}
```

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | ip.ReverseIp | successful operation |

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `ipReverse` | ip | read-only | IP address (e.g., 192.0.2.0) |
| `reverse` | string | read-only |  |

```json
{
  "ipReverse": "192.0.2.0",
  "reverse": "string"
}
```

### Example

```bash
curl -X POST \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/reverse" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN" \
  -H "content-type: application/json" \
  -d '{ }'
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

result = client.post("/ip/{ip}/reverse",
	ipReverse = None, #  (type: ip)
	reverse = None, #  (type: string)
)

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

$result = $ovh->post("/ip/{ip}/reverse", array(
	ipReverse => null, //  (type: ip)
	reverse => null, //  (type: string)
));

print_r($result);
?>
```

## Create a reverse delegation

`POST /1.0/ip/{ip}/delegation`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#post-ip-ip-delegation

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:delegation/create`

Create a reverse delegation. Delegates the reverse zone of the IPv6 block to the given name server, and returns the new delegation.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |

### Request body (required)

Type: `object`

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `target` | string | yes | Target for reverse delegation on IPv6 |

```json
{
  "target": "string"
}
```

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | ip.ReverseDelegation | successful operation |

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `target` | string | read-only | NS target for delegation |

```json
{
  "target": "string"
}
```

### Example

```bash
curl -X POST \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/delegation" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN" \
  -H "content-type: application/json" \
  -d '{ }'
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

# Request body type: string
result = client.post("/ip/{ip}/delegation",
	target = None, # Target for reverse delegation on IPv6 (type: string)
)

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

// Request body type: string
$result = $ovh->post("/ip/{ip}/delegation", array(
	target => null, // Target for reverse delegation on IPv6 (type: string)
));

print_r($result);
?>
```

## Delete a reverse

`DELETE /1.0/ip/{ip}/reverse/{ipReverse}`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#delete-ip-ip-reverse-ipreverse

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:reverse/delete`

Delete a reverse. Removes the reverse DNS (PTR) name set on this address of the block. The call returns no content.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |
| `ipReverse` | path | ip | yes | IP address (e.g., 192.0.2.0) |

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | — | successful operation |

### Example

```bash
curl -X DELETE \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/reverse/{ipReverse}" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN"
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

result = client.delete("/ip/{ip}/reverse/{ipReverse}")

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

$result = $ovh->delete("/ip/{ip}/reverse/{ipReverse}");

print_r($result);
?>
```

## Delete a reverse delegation

`DELETE /1.0/ip/{ip}/delegation/{target}`

Link: https://developers.eu.ovhcloud.com/reference/network/ip-addresses/reverse-dns/#delete-ip-ip-delegation-target

**Status:** Stable production version  
**IAM actions:** `ip:apiovh:delegation/delete`

Delete a reverse delegation. Removes this name server from the reverse delegation of the IPv6 block. The call returns no content.

### Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ip` | path | ipBlock | yes | IP (v4 or v6) CIDR notation (e.g., 192.0.2.0/24) |
| `target` | path | string | yes | NS target for delegation |

### Responses

| Status | Type | Description |
| --- | --- | --- |
| 200 | — | successful operation |

### Example

```bash
curl -X DELETE \
  "https://api.eu.ovhcloud.com/1.0/ip/{ip}/delegation/{target}" \
  -H "accept: application/json" \
  -H "authorization: Bearer $OVH_TOKEN"
```

```python
'''
First, install the latest release of Python wrapper: $ pip install ovh
'''
import json
import ovh

# Instantiate an OVH Client.
# You can generate new credentials with full access to your account on
# the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
client = ovh.Client(
	endpoint='ovh-eu',               # Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
	application_key='xxxxxxxxxx',    # Application Key
	application_secret='xxxxxxxxxx', # Application Secret
	consumer_key='xxxxxxxxxx',       # Consumer Key
)

result = client.delete("/ip/{ip}/delegation/{target}")

# Pretty print
print(json.dumps(result, indent=4))
```

```php
<?php
/**
 * First, download the latest release of PHP wrapper on github
 * And include this script into the folder with extracted files
 */
require __DIR__ . '/vendor/autoload.php';
use \Ovh\Api;

/**
 * Instantiate an OVH Client.
 * You can generate new credentials with full access to your account on
 * the token creation page (https://api.ovh.com/createToken/index.cgi?GET=/*&PUT=/*&POST=/*&DELETE=/*)
 */
$ovh = new Api('xxxxxxxxxx',  // Application Key
               'xxxxxxxxxx',  // Application Secret
               'ovh-eu',      // Endpoint of API OVH (List of available endpoints: https://github.com/ovh/python-ovh#2-configure-your-application)
               'xxxxxxxxxx'); // Consumer Key

$result = $ovh->delete("/ip/{ip}/delegation/{target}");

print_r($result);
?>
```