---
title: identifier
framework: ContactProvider
role: symbol
role_heading: Instance Property
platforms: [iOS 18.0+, iPadOS 18.0+]
path: contactprovider/contactproviderdomain/identifier
---

# identifier

The identifier of the domain.

## Declaration

```swift
var identifier: String { get }
```

## See Also

### Identifying the domain

- [displayName](contactprovider/contactproviderdomain/displayname.md)