<!--
{
  "availability" : [
    "macCatalyst: 13.1.0 - 13.1.0",
    "macOS: 10.0.0 - 10.13.0"
  ],
  "documentType" : "symbol",
  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/NSPortNameServer/systemDefaultPortNameServer",
  "metadataVersion" : "0.1.0",
  "role" : "Type Method",
  "symbol" : {
    "kind" : "Type Method",
    "modules" : [
      "Foundation"
    ],
    "preciseIdentifier" : "c:objc(cs)NSPortNameServer(cm)systemDefaultPortNameServer"
  },
  "title" : "systemDefaultPortNameServer"
}
-->

# systemDefaultPortNameServer

Returns the single instance of `NSPortNameServer` for the application.

```
+ (NSPortNameServer *) systemDefaultPortNameServer;
```

## Return Value

The single instance of `NSPortNameServer` for the application.

## See Also

  [Distributed Objects Programming Topics](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/DistrObjects/DistrObjects.html#//apple_ref/doc/uid/10000102i)


---

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)