Bulk WhatsApp Validation: CSV & TXT Guide
Use one number per row, include international country codes when possible, and keep the source file clean so results can be matched back reliably.
Prepare the file
- Use CSV or TXT.
- Put one phone number on each row.
- Prefer international country-code format.
- Remove duplicate rows before uploading if you do not need repeated checks.
When numbers do not include a country code
The bulk page can apply one selected country code to the list. Use this only when every row belongs to the same country.
Recommended input447984004914
5511987654321
14155550123