To call from a private number, you can hide your caller ID so the recipient sees "Private Number" or "Blocked Caller" instead of your actual phone number. Here are the common methods:

• Dial a blocking code before the number you want to call:
  • In the USA and Canada, dial *67 before the phone number (e.g., *67 123-456-7890).
  • In the UK and Europe, use *31#.
  • In Australia, use #31#.
• Use your phone's settings to hide your caller ID automatically for all calls:
  • On iPhone: Go to Settings > Phone > Show My Caller ID and toggle off.
  • On Android: Open Phone app > Settings > Call Settings > Additional Settings > Caller ID > select "Hide number".
• Contact your mobile carrier to request permanent hiding of your number or a private phone number service.
• Use third-party apps or VoIP services that mask your number.

Note that some methods may not work with emergency numbers or toll-free numbers, and some recipients may block anonymous calls. For one-time privacy, dialing *67 is quick and free. For recurring privacy, adjusting phone settings or carrier services is better. This information applies to most smartphones and carriers in the US, Canada, UK, Australia, and other regions with respective blocking codes.