Internet, Networking, & Security Around the Web 5 Best Ways to Find a Cell Phone Number Online A cell phone number lookup has never been easy, but these tips help by Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated on March 17, 2020 Around the Web Browsers Cloud Services Error Messages Family Tech Home Networking 5G Antivirus VPN Web Development Around the Web View More Tweet Share Email Public cell phone directories are hard to find, but that doesn't mean they're impossible to get a hold of. There are several tools you can use to track down who owns a phone number or dig up someone's personal or business phone numbers. Cell phone lookup sites are available in two forms: find a cell phone number by searching for some other information you know about the caller, or look up someone's number to see who owns it (called a reverse number search). You might need your own mobile number directory if you lost a friend's number, you're trying to contact distant relatives, or you're curious who just called you. Below is a comprehensive look at the best ways to use the internet to find phone number information. While the web is a vast treasury of resources, not everything can be found online. It's also important to remember that if you do find the person's phone number, you use common sense and not spam them; there could be a reason their number was so difficult to locate. If you're trying to find a cell phone number database because someone is spamming you, you can always just block their phone number. To prevent someone from finding your number when you make a call, learn how to hide your number with *67. 01 of 05 Run Cell Phone Lookups With People Search Engines What We Like Best way to track the owner of a number. Find cell number by name, or vice versa. Includes lots of other identifiable information. What We Don't Like Some services cost money to find the cell number. Information is sometimes outdated, so numbers are no longer active. 9 People Search Engines You Can Use to Find Anyone The best way to find cell phone numbers online is with a people finder tool. These tools gather lots of information about the person, which might include not only their cell phone number but also their full name, address, email, job history, relatives, etc. Most of these websites let you search by whatever information you already know. For example, you can find who owns the phone number (if you know the number) or which phone numbers belong to the person (if all you know is their name, email, username, or address). Some of these sites can even be used to find relatives and neighbors, meaning that you could ultimately find someone's brother's phone number, for example, if all you know as a starting point is his sister's name. A few examples of places where you can find out a cell phone number or get a name from the number, include TruePeopleSearch and ZabaSearch (both free). For a fee, you can get lots of other personal details with BeenVerified, TruthFinder, or Pipl. Try your best to make a people finder tool your first choice when looking up phone number information. Most of them employ techniques like web searches, social media profiles, reverse username tactics, and other methods. 02 of 05 Use Social Media to Track a Number What We Like One-stop source for lots of other detail about the person. Ideal for cell phone tracking because of the massive user base. What We Don't Like Usually no search function just for finding numbers. The Top Social Networks People Are Using Today There are hundreds of millions of people active on various social media sites all over the world. Many people use these websites to share information with each other, and yes, that does include phone numbers. Simply type the person's name into the site's search function and see what comes back. Some people might have their social media profile set to private or might require you to connect with them on the service before you can view personal details like their phone number. However, others are wide open, and their phone number and other details might be entirely public. Depending on the social media site you use, you might be able to search for a number using the person's name and find who owns a phone number if you don't know their name, all at no charge. Learn how to find people on Facebook if you're looking for someone's phone number on Facebook. 03 of 05 Find Cell Phone Numbers Across Multiple Sites With a Web Search Engine What We Like Mobile phone search is performed across multiple sites at once. Lets you add accompanying data for better results. What We Don't Like Many results are auto-populated and don't include valuable information. A reverse phone number lookup with Google or another web search engine is another useful way to track cell numbers. This is the best way to search the web as a whole to see which cell phone directories have that number listed. You can also use Google to find phone numbers if all you have is a name or other information. If the mobile number is listed on a blog, website, public job profile, people search engine that's not listed above, etc., it will show up here. From there, you can do some more digging on that specific site to learn whose number it is and maybe even find their email and other contact information like a physical address. Using a search engine to research phone numbers works for not only cell numbers but also landlines and toll-free phone numbers. For example, you can find an 800 number by searching "800 number" <company>, or look up a company's number with a search such as "contact us" XYZ (for XYZ's support number). Try adding other relevant information to the search to help narrow down the results. A simple phone number search should be enough since phone numbers are unique to each owner, but if you also know where the person lives, where they work or went to school, what the company name is, the person's first or last name, etc, it could help locate the correct information. 04 of 05 Use a Site Built for Finding Cell Phone Number Information What We Like They focus solely on finding phone numbers. Very straightforward and easy to use. Most are completely free. What We Don't Like Usually have less information than other sites. Most of them don't show cell numbers, only landlines. The search engine method above is useful for looking up cell phone numbers when you're not sure where exactly to search. However, if you didn't have luck with that method, there are sites made specifically for finding phone numbers and digging up who owns a number. While most number lookup services focus on landlines, these have been confirmed to work to find a name associated with the number you look up, or for doing the opposite (locating a number from the person's name): Spy Dialer: Enter the cell phone number to see the owner's name and where the area code is from.ZLOOKUP: Type the number into the box to see the person's name and which carrier the number currently belongs to.USPhonebook: Simple website that lets you find a number by name and find a name by a cell number search.ReversePhoneCheck: Not free, but queries over half a billion mobile numbers to match a name with the cell phone number. It also includes lots of other personal details, but only after you pay. 05 of 05 Find a Cell Number With Just a Username alengo / E+ / Getty Images What We Like A great choice if social media searching doesn't work. Can dig up multiple sites on the same person with one search. What We Don't Like Isn't as guaranteed as other cell number lookup techniques. How to Find Someone Online With Just Their Username Most people use the same username all over the web, so knowing it can help you find all of the other sites they're using. This is a great jumping-off point to eventually finding their cell phone number.