Phone Number Masker
Free online tool to batch mask phone numbers with asterisks for privacy.
Tool Guide
About the Phone Number Batch Masking Tool
An online tool for batch-masking phone numbers with asterisks that processes phone numbers in bulk, replacing some of the digits with a chosen symbol (such as *, #, etc.).
It supports multiple approaches, such as hiding the middle four digits or the last four digits, ideal for privacy protection, data anonymization, information display, and similar scenarios.
How to Use the Phone Number Masking Tool
Enter phone numbers: Paste or type a list of phone numbers into the input box (batch processing supported).
Choose a masking approach: Set the starting position and length of the mask (such as the middle four digits, the last four digits, or custom).
Set the masking symbol: The default is *, which can be changed to #, X, or other symbols.
Click to process: Click "Mask Numbers," and the system automatically completes the batch masking.
Download results: Copy or export the processed phone number list for easy archiving or use.
Phone Number Masking FAQ
How many phone numbers can this tool batch-process?
It supports entering multiple phone numbers for one-time batch processing, with no need to modify them one by one.
Besides *, can other symbols be used for masking?
Yes, custom symbols such as # and X are supported to meet different needs.
Can masked numbers be restored?
Masking is irreversible; once processed, the original numbers cannot be automatically restored, so please back up the original data before proceeding. If you need to restore masked numbers, you can try the Online Masked Phone Number Restoration Tool to fill them in.
Does it support exporting the processed results?
TXT and Excel export are supported, making saving, organizing, and further processing convenient.