Guides & Best Practices
Practical guides on two-stage number filtering, file preparation, and result CSV schemas.
Registered, active and extended checks explained
A registered check finds accounts, an active check adds recent activity, and an extended check adds avatars. Pick the right one for your list.
Read morePreparing a number file: format, country codes, duplicates
Check the file format, country codes and counts before you upload. Quotes count unique numbers that pass validation.
Read moreHow to read your result files
Results are split into files such as successful and unsuccessful. Unsuccessful is not unregistered, large orders arrive in batches, and files are kept for 180 days.
Read more
Ready to verify your next number batch?
Contact support to open an account, then upload number lists, preview deduplicated quotes, and download categorized CSV outputs.