# CFHostGetNames(_:_:) Gets the names from a CFHost. ``` func CFHostGetNames(_ theHost: CFHost, _ hasBeenResolved: UnsafeMutablePointer?) -> Unmanaged? ``` ## Parameters `theHost` The host to examine. The host must have been previously resolved. (To resolve a host, call [`CFHostStartInfoResolution(_:_:_:)`](/documentation/CFNetwork/CFHostStartInfoResolution(_:_:_:)).) This value must not be `NULL`. `hasBeenResolved` On return, contains `TRUE` if names were available, otherwise `FALSE`. This value may be `NULL`. ## Return Value An array containing the of names of `theHost`, or `NULL` if no names were available. ## Discussion This function gets the names 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)