The simplest, most convenient
reverse phone lookup service on the web

Knowphone.com allows you to trace back phone numbers--mobile or landline-- and give you detailed information on the owner instantly. Using a database containing millions of records, KnowPhone.com is the most comprehensive phone number lookup tool on the web

Phone Number
Example: 555-555-5555

Find any phone number in seconds


Our phone number database has extensive information on wireless, land phones and business phones. You can input any number within North America and we will give you results in seconds

Get information even for unlisted and unpublished numbers

Some directories only offer phone numbers you can find in a phone book - we pay a lot of money to make sure our customers have access to the latest and greatest list of phone numbers from all sources - including Cell and Unlisted!

100% Guaranteed Results



With Knowphone, customers are our top priority. If you're not happy, simply let us know and we refund your money!