If you don't see data for some of your application’s users on the world map, it may be because those users have private IP addresses. You can map such private IP addresses to real geographic locations at Settings > Web and mobile monitoring > Geographic locations and thereby make these users visible on the map. You can even override settings for real client IP addresses if necessary for mapping purposes.
If you have numerous custom IP addresses to import, use the CSV import tool available at Settings > Web and mobile monitoring > Geographic locations. A sample CSV file is available there for download. The file includes complete instructions, CSV file formatting requirements, optional fields, and examples.