PCMag editors select and review products independently. If you buy through affiliate links, we may earn commissions, which help support our testing.

Who's Calling? Here's What You Need to Know Before Picking Up the Phone

Getting a random call from an unknown number? Here's how to do a reverse phone lookup.

 & Jason Cohen Senior Editor, Help & How To

Our team tests, rates, and reviews more than 1,500 products each year to help you make better buying decisions and get more from technology.

Our Expert
LOOK INSIDE PC LABS HOW WE TEST
65 EXPERTS
43 YEARS
41,500+ REVIEWS
(Credit: pathdoc / Shutterstock)

The phone rings and it's a number you don't recognize. Or perhaps an unknown number shows up in your missed calls. You're curious, but you don't want to pick up or call back if it's a telemarketer or scammer. Instead of playing robocall roulette, here are a few ways to investigate who's calling you before you engage.


Legit Call vs. Scam Call: How to Tell the Difference

You may have noticed that America has a problem with scam calls. Scammers took $10 billion from unsuspecting victims in 2023, and it's hard to see the problem going away anytime soon. If you get a call, there are a few ways to tell if it's legit or not.

  • What does the phone say? When a call comes in, look for a displayed number and location. If your phone isn't showing any information and says something like Unknown, chances are there's a scammer on the other end of the line. Anyone can hide their number, but best to let this one go to voicemail and call back if it's someone you know. If the phone says Scam Likely, it's typically correct; feel free to ignore the call.
  • Look for verification. Carriers have started verifying phone numbers when you receive a call. Google's phone app also adds a badge on incoming calls that it can attach to a business. Unfortunately, this doesn't verify every call from a legitimate business or weed out legitimate businesses that use robocalls.
  • Watch out for spoofed numbers. Have you ever gotten a call from what looks to be your own phone number, only it's a few numbers off? Don't pick those calls up; scammers like to spoof phone numbers and trick you into picking up. The idea is that you're more likely to pick up if you think the call is coming from your area code or from someone you know.

Search the Web

(Credit: Google)

If you want to quickly know whether a caller is legit or a scammer, do a quick web search. As an example, I received a call from a number I didn't recognize. Instead of calling back, I searched for it online and found that the number was connected to my college's call center.

Another phone number did not show any reliable results, suggesting it may be a scammer or robocaller. As a rule of thumb, if the search results are primarily reverse phone lookup websites, it's safe to say other people have received unwarranted calls from that same number and are reporting it to warn others.


Do a Reverse Phone Lookup

Speaking of reverse phone lookups, if you really want to do some digging about a certain phone number, there are many websites that can help you out. You usually have to pay to get any worthwhile information, but there are a few tools that can help you for free.

WhoCallsMe

(Credit: WhoCallsMe)

At WhoCallsMe, users can report their experiences with specific phone numbers. Enter a number and the website will tell you where the area code is from. You can then enter your own report or view what others have to say about it.

Spy Dialer

(Credit: Spy Dialer)

Spy Dialer allows you to search for phone numbers, names, addresses, and emails. Enter a phone number, then choose if you want to look up any linked names or photos, listen to the number's outbound voicemail, or confirm if the number is spam or not. Spy Dialer can tell you with whom the number is registered, their general location, and whether or not the number has been reported as spam before.

For more information, click Phone Details to see how long the line has been in service and if the number is spoofed. Choose Hear Voicemail to get the caller's outbound voicemail, if available. You can click Report Call to file a complaint with Spy Dialer.

PeopleFinders

(Credit: PeopleFinders)

PeopleFinders allows you to look up a phone number, name, address, or email. Enter a phone number into the search bar to get the caller's general location, carrier, and phone type. More revealing information, such as the caller's full name and address, are hidden behind a paywall.

USPhoneBook

(Credit: USPhoneBook)

You can look up phone numbers, names, and addresses at USPhoneBook, though this works better for identifying individuals rather than businesses. Enter a number to find the person connected to it. The site will display a list of people who may be related to the person. You can then mark the number as safe or spam. Keep in mind that these listings can be outdated.

Click Get Details to view extra information about the person. This will include their age, current (and former) addresses, any phone numbers associated with them, a list of relatives and associates, and even related email addresses.


What to Do Next

(Credit: FTC)

Once you've looked up the number, now what? If it's a caller you don't want to hear from, you can block spam callers. Keep in mind that, since most spammers use spoofed numbers that constantly change, this will only work if the same number keeps calling. iPhone users can send any callers who aren't in their contacts directly to voicemail, though this isn't always desired.

A better option is to look into your mobile carrier's anti-spam solutions for stopping spam calls and robotexts. There are also apps like RoboKiller and Truecaller that can help keep the spam callers at bay. You can also report unwanted calls to the FTC and register your number with the National Do Not Call Registry, though those wishing to do you harm will undoubtedly ignore this.

About Our Expert

Jason Cohen

Jason Cohen

Senior Editor, Help & How To

My Experience

As PCMag's editor of how to content, I have to cover a wide variety of topics and also make our stories accessible to everyday users. Considering my history as a technical writer, copywriter, and all-around freelancer covering baseball, comics, and more at various outlets, I am used to making myself into an expert.

I believe tech corporations are bad, but you might as well know how to use technology in everyday life. Want more how to content delivered right to your inbox? Sign up for the tips and tricks newsletter that I curate twice a week.

The Technology I Use

My job as how-to guru means I use just about every gadget under the sun, so I can figure out how everything works. I work from a Lenovo ThinkPad running Windows 11, but also have a very large Dell Inspiron 17 3000 and Apple silicon MacBook. I also have a Google Pixel 6a for personal use and use a Galaxy Z Flip 4 for additional Samsung-related testing. For iOS coverage, an iPhone 13 mini works like a charm, though it's already becoming a little long in the tooth.

My desktop situation includes a dual monitor setup with a modest Acer monitor. I also use a Logitech mouse (who can use these ThinkPad trackpads) and a Havit keyboard (my first mechanical keyboard; I love it but my wife hates it!). I'm a recent convert from wired headphones; I have Anker Soundcore Liberty Air wireless earbuds for personal use and have taken to the Sennheiser HD 450BT headphones for work.

Whenever I have a second to myself, I'm probably gaming on my Nintendo Switch, Steam Deck, or Xbox Series S. I also still have a bunch of classic consoles lying around as well.

  • Breaking down complicated and confusing processes into simplified instructions
  • Finding new tech problems to solve
  • OS-level tips and tricks

Read full bio