Do blocked calls appear in my call history?

From iOS 18 :

Display of blocked numbers has been updated by iOS from version 18.

Now, iOS warns you when an incoming call is blocked:

• the native application Phone displays a notification when the incoming call is blocked stating the  call is blocked by Orange Phone (needs the notification permission to be granted for the native Phone app)
• the blocked call is also listed in the Recents tab of the native Phone app

For iOS < 18 :

A call whose number has been blocked by you, or which appears in the list of automatically blocked numbers (from the blocking settings) will not appear in the call history of your iOS Phone app.

So you have no way of knowing that a call has been blocked.

The caller whose call has been blocked may still leave you a voice message on your voicemail.