Best-fit use cases
Foreign trade lead lists, US customer phone files, IM contact lists, and SMS or RCS data preparation can all benefit from region grouping before export.
Core workflow
Import TXT or CSV files, normalize the phone number format, identify state or region, select target areas, and export clean TXT or CSV files.
Top-tier fields
City and carrier fields are advanced data fields for users who need more detailed sorting, review, and delivery control.
Important notes
Region lookup is based on number allocation data. It does not prove real-time user location or whether a number is reachable.
Common Questions
Can it group DC and other US regions?
Yes. US state or region grouping is the core workflow.
Can advanced users export city and carrier fields?
No. City and carrier export is reserved for top-tier users.
Can it handle million-row files?
It is designed for large local files, while real speed depends on the computer and file format.