1. Find a person by a name or phone number worldwide for free using Truecaller.

  2. Search over 1 Billion phone numbers worldwide. Identify unknown phone numbers and block unwanted calls.

  3. Identified Caller is a phone number search engine that organizes public records information to help...

  4. You can use this tool if someone calls you and you aren't familiar with the phone number, or...

  5. Check the telephone number to identify the country, state, region, city, mobile operator.

  6. WhoMen lets you make free and unlimited calls & texting with your contacts.

  7. Caller ID, phone number tracker, call blocker, contacts location, works offline

  8. WhosCall is a reliable caller ID app whose popularity has led to its adoption by many users including international media. You can now manage the numbers calling you regardless of whether they are part of your contact list or not... read more.

  9. The Mac contacts app you'll want to use.

  10. Theuknowncall.com provides information about calls or text messages from unknown phone numbers.

  11. Complete phone number report.

  12. CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.