IP masking

At a glance: How to mask app user IP addresses in AppsFlyer raw data reports and in postbacks sent to partners.

IP masking

When turning on IP masking: 

  • User IP addresses aren't listed in raw data reports nor are they provided via postbacks to partners
  • IP address field is populated with the value


  • Installs that occurred before IP masking was turned on aren't masked
  • AEM data sharing for Meta ads isn't supported for both server-to-server and SDK events when IP masking is turned on. This means data isn't shared with Meta ads. 


  • The IP masking setting follows this path: Turned off, turned on, and then turned off. 
  • Three users install the app on different dates as shown in the app install table
  • The IP masking and raw data report table below shows the status of the IP masking setting and related raw data on the relevant dates.

App installs:

Install date User ID

 IP address

January 2 User_A 
January 7 User_B 
January 14 User_C 

IP masking and raw data:

Date IP masking setting status

 Raw data report

January 1 Off User A
January 2 On User_A
January 8 On User_A
January 9 Off


January 15 Off


Turn on IP masking

IP masking is set per app and affects installs from all sources.

To enable IP masking:

  1. In AppsFlyer, from the side menu, select  Settings > App Settings.
  2. Scroll down to Advanced Settings.
  3. Turn on Mask IP addresses.

IP masking in raw data reports

When IP masking is turned on:

  • New installs and in-app events show an IP address of 
  • Location-related parameters, like country and city, still appear in raw data reports.

Example raw data report