Several Methods to Determine Whether a Phone Number Is Registered on Facebook!

Facebook is a very popular social media platform among marketers. On this platform, marketers can promote their products in groups, posts, livestreams, and many other channels, allowing for efficient and precise marketing operations.

One major advantage of Facebook is that we can leave messages or promotions without adding the person as a friend—we only need some basic information (such as the phone number). This makes it highly suitable for marketing.

Thanks to this feature, we can reverse-check phone numbers to determine if they are registered on Facebook, which allows for more targeted marketing efforts. Today, we will introduce several methods to help you determine whether a phone number is registered on Facebook!

1. Test Through Facebook Login Page

You can go to the login page and enter the phone number you want to check, then input any random password to try logging in.

If the phone number is registered, the system will usually prompt you that the password is incorrect.

If the system returns a message like “No account found” or “This number is not linked to any account,” then it means the phone number is not registered on Facebook.

(This also works through the account recovery page.)

2. Sync Phone Contacts via Facebook App

You can enable the contact sync feature in the Facebook app.

When newly registering or using the app, Facebook will scan the phone numbers in your contact list, and directly show which contacts are already registered on Facebook.

The biggest drawback of this method is that it requires you to save the phone number in your phone’s contact list and grant Facebook permission to access your contacts.

3. Use CrownSoft’s Various Account Filters

This software allows you to quickly import phone numbers, and after logging in with the required account, it will automatically verify whether the numbers are registered on Facebook.

This method is highly convenient and reliable.

CrownSoft’s Various Account Filters uses official API interfaces to validate phone numbers against Facebook, with an accuracy rate of 99% in the screening results.

The filtered results can also be exported into a list, which can be easily shared or used in other marketing software.