Mobile Phones Android 562 562 people found this article helpful How to Call Back a Private Number Want to confront that masked caller? Here's how by Susan J. Owens Writer Former Lifewire writer Susan J. Owens is a tech writer focused on AI, blockchain, and virtual machines. Her work appears in InformationWeek, Entrepreneur, and Fast Company. our editorial process LinkedIn Susan J. Owens Updated on March 25, 2020 reviewed by Jon Fisher Lifewire Tech Review Board Member Jonathan Fisher is a CompTIA certified technologist with more than 6 years' experience writing for publications like TechNorms and Help Desk Geek. our review board Article reviewed on Feb 18, 2020 Jon Fisher Android Switching from iOS Tweet Share Email When you receive a private or blocked call, there are ways to find out who the caller is without answering. This is good information to know, especially if you receive a series of calls from unknown or private callers. Here's how to call back a private number. This guide applies to house phones and landlines, but there are major exceptions which are called out below. Call a Private Number for Free With *69 Following the FCC mandate to allow private calling, telephone companies created a service called Last Call Return that automatically calls the last number that called your phone, whether or not the call was private. Derek Abella / Lifewire The service is free for many, but not all, providers, and to activate it, dial *69 (in the U.S.) on a landline or cellphone before another call comes in. After you dial, if a person answers, ask who is speaking. The drawbacks of this approach depend on the phone service provider. For example, some providers supply a computer-generated voice that tells you the number along with the option to place a call. Other telephone providers call back the private number and don't provide you with the number. In addition, *69 doesn't work with all phones, and some carriers limit the time window to activate the service to 30 minutes after the call is received. Using *69 could make your problem worse. Some blocked calls are automated callers who want to confirm if your number is active. Their intent is to sell your number to other scammers. Calling back lets the system know you have an active line. Check Phone Provider Logs Your telephone service provider keeps a log of your incoming and outgoing calls. To access this list, sign in to your account and enter your account password. Sometimes the numbers of private callers are listed here, unmasked. To find the number, check the phone log on your phone to find the time the blocked call came in. Then, look online at the call log, sometimes located under the billing and usage menu, for a match with the date and time. The length of time call records are kept varies with each phone carrier. Typically, these records are held for one to seven years and can be used in criminal investigations. Look up the Number With Reverse Number Lookup If you're able to find the number, use a reverse phone lookup. Type the number in Google or the public Yellow Pages to learn if the number belongs to a cellphone or a landline, and to find the location where the phone is registered. 5 Best Ways to Find a Cell Phone Number Online In some cases, you are required to pay a fee to get a full report. The fee may be refundable if the service is unable to provide information about the caller. Use a Service to Unblock Private Numbers You can pay a service such as TrapCall to unblock a private number. TrapCall is a tool that unmasks private and blocked callers. It can provide the phone number and the name the phone is registered to. It can also provide the caller's address, and it offers a blacklist option to block future calls. Download TrapCall for Android Download TrapCall for iOS Activate Call Tracing to Unblock Callers Some telephone providers offer a call-tracing service to put an end to unwanted calls that are harassing, obscene, unlawful, or threatening. In most cases, to activate this service, press *57 or #57. Some phone providers offer this service for free, while others require a small monthly fee. Call tracing may not be available on mobile devices.