---
title: CNInstantMessageAddressServiceKey
framework: contacts
role: symbol
role_heading: Global Variable
path: contacts/cninstantmessageaddressservicekey
---

# CNInstantMessageAddressServiceKey

Instant message address service key.

## Declaration

```swift
let CNInstantMessageAddressServiceKey: String
```

## Discussion

Discussion This key takes a string value.

## See Also

### Instant Messaging Keys

- [CNInstantMessageAddressUsernameKey](contacts/cninstantmessageaddressusernamekey.md)