# CFHostGetAddressing(_:_:) Gets the addresses from a host. ``` func CFHostGetAddressing(_ theHost: CFHost, _ hasBeenResolved: UnsafeMutablePointer?) -> Unmanaged? ``` ## Parameters `theHost` The CFHost whose addresses are to be obtained. This value must not be `NULL`. `hasBeenResolved` On return, a pointer to a Boolean that is `TRUE` if addresses were available and `FALSE` if addresses were not available. This parameter can be null. ## Discussion This function gets the addresses from a CFHost. The CFHost must have been previously resolved. To resolve a CFHost, call [`CFHostStartInfoResolution(_:_:_:)`](/documentation/CFNetwork/CFHostStartInfoResolution(_:_:_:)). ### Special Considerations This function gets the addresses in a thread-safe way, but the resulting data is not thread-safe. The data is returned as a “get” as opposed to a copy, so the data is not safe if the CFHost is altered from another thread. --- Copyright © 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)