What is the *#69 code used for?

How to Call Back a Private Number with *69

Ever get a mysterious call from a hidden number and wonder who it was? You’re not alone. Many people search for ways to return calls from unknown or blocked numbers — and there’s a simple trick that’s been around for years: dialing *69.

Originally known as "Last Call Return," *69 allows you to automatically redial the last incoming number that called you, even if it was hidden by caller ID blocking. Just pick up your phone, dial *69, and your carrier will attempt to reconnect you to that number. In many cases, it even reveals the previously private number on your display.

This feature works on most landlines and some mobile networks, though availability can vary by carrier and location. Keep in mind that it only stores the most recent call, so if another number calls after the mysterious one, that’s the number *69 will return. Also, it won’t work if the caller has permanently blocked their number or used a service that prevents callback tracking.

While *69 used to be a go-to solution in the landline era, modern smartphones now offer additional tools — like call filtering and spam detection — to handle unknown callers. Still, *69 remains a quick, no-frills option if you’re curious about that recent missed call from a private number.

Just remember: while it’s useful, it’s not foolproof. Some callers stay anonymous for a reason, and persistent follow-ups might not always be welcome. Use it wisely.