<!--
{
  "availability" : [
    "iOS: 14.0.0 -",
    "iPadOS: 14.0.0 -",
    "macCatalyst: 14.0.0 -",
    "macOS: 11.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "NetworkExtension",
  "identifier" : "/documentation/NetworkExtension/NEDNSSettingsManager",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "Network Extension"
    ],
    "preciseIdentifier" : "c:objc(cs)NEDNSSettingsManager"
  },
  "title" : "NEDNSSettingsManager"
}
-->

# NEDNSSettingsManager

An object you use to create and manage a DNS settings configuration.

```
class NEDNSSettingsManager
```

## Overview

When your app starts up, access the shared instance of the DNS settings manager, and load existing settings from the preferences using [`loadFromPreferences(completionHandler:)`](/documentation/NetworkExtension/NEDNSSettingsManager/loadFromPreferences(completionHandler:)). You can define your DNS server configuration, and persist it by calling [`saveToPreferences(completionHandler:)`](/documentation/NetworkExtension/NEDNSSettingsManager/saveToPreferences(completionHandler:)).

In order to use your DNS settings, the user needs to enable it in the Settings app on iOS or in System Preferences on macOS.

## Topics

### Managing DNS configurations

[`shared()`](/documentation/NetworkExtension/NEDNSSettingsManager/shared())

Access the single instance of a DNS settings manager.

[`loadFromPreferences(completionHandler:)`](/documentation/NetworkExtension/NEDNSSettingsManager/loadFromPreferences(completionHandler:))

Load your DNS settings configuration from the system networking preferences.

[`saveToPreferences(completionHandler:)`](/documentation/NetworkExtension/NEDNSSettingsManager/saveToPreferences(completionHandler:))

Save your DNS settings configuration to the system networking preferences.

[`removeFromPreferences(completionHandler:)`](/documentation/NetworkExtension/NEDNSSettingsManager/removeFromPreferences(completionHandler:))

Remove your DNS settings configuration from the system networking preferences.

### Accessing DNS configuration properties

[`isEnabled`](/documentation/NetworkExtension/NEDNSSettingsManager/isEnabled)

A Boolean you use to query the enabled state of the DNS settings configuration.

[`dnsSettings`](/documentation/NetworkExtension/NEDNSSettingsManager/dnsSettings)

An object that contains the configuration settings for a DNS server.

[`localizedDescription`](/documentation/NetworkExtension/NEDNSSettingsManager/localizedDescription)

A string that contains the display name of the DNS settings configuration.

[`onDemandRules`](/documentation/NetworkExtension/NEDNSSettingsManager/onDemandRules)

A list of ordered rules that defines the networks on which the DNS settings will apply.

### Handling errors

[`NEDNSSettingsErrorDomain`](/documentation/NetworkExtension/NEDNSSettingsErrorDomain)

The domain for errors resulting from calls to the DNS settings manager.

[`NEDNSSettingsManagerError`](/documentation/NetworkExtension/NEDNSSettingsManagerError)

Error codes specific to DNS managers.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)