What is WhatsApp number checking?
It applies a selected WhatsApp check to a lawfully obtained number list and returns structured results aligned with the source data.
WhatsApp Hub
WhatsApp Number Checking Research and Guides
Practical guidance for WhatsApp registration, fast registration, high-precision registration, activity, gender and age, avatar, and full-format checks, from reliable TXT input to task selection and result interpretation.
Latest guides
315 published articles match this hub.
WhatsApp 1 min
For Vietnam Lists Using WhatsApp and Zalo, Do Not Merge Activity into One Field
Keep WhatsApp and Zalo task fields, time semantics and permissions distinct in a Vietnam list instead of creating one vague activity column.
Read guideWhatsApp 1 min
Do Not Overwrite Poland +48 WhatsApp Activity: Keep an Event History
Store Poland +48 WhatsApp Activity as timestamped events with expiry and access controls instead of overwriting one CRM field.
Read guideWhatsApp 1 min
After South Africa +27 WhatsApp Registration, Three Gates Still Remain
Separate South Africa +27 formatting, WhatsApp registration, language preference and contact permission into independent gates.
Read guideWhatsApp 1 min
Mexico +52 WhatsApp Registration: Version the Number-Cleanup Rules
Version cleanup rules for Mexico +52 lists from different periods and accept WhatsApp Registration through stratified exceptions rather than silent repair.
Read guideWhatsApp 1 min
Cameroon +237 WhatsApp Activity Queues: Do Not Guess French or English from a Phone
Separate Cameroon +237 activity ordering from French or English preference and build routing from user choice rather than phone or avatar.
Read guideWhatsApp 1 min
South Sudan +211 WhatsApp Registration: Record Every List Handoff
Build a provenance chain for every handoff of a South Sudan +211 list before interpreting WhatsApp Registration results.
Read guideWhatsApp 1 min
France +33 WhatsApp Activity Decision Log: Why, Who and When to Delete
Use a one-page decision log to govern the purpose, access, validity and deletion of a France +33 WhatsApp Activity task.
Read guideWhatsApp 1 min
Can “U.S. Minor Outlying Islands” Be a WhatsApp Activity Market? Audit the Taxonomy First
Audit whether the U.S. Minor Outlying Islands statistical grouping is a defensible WhatsApp Activity market and require island-level provenance.
Read guideWhatsApp 1 min
After a Bolivia +591 WhatsApp Activity Check, Did the Queue Actually Improve?
Evaluate a Bolivia +591 WhatsApp Activity task through queue waiting, completion and expiry outcomes rather than return rate alone.
Read guideWhatsApp 1 min
Designing the Denominator for a Japan +81 WhatsApp Gender and Age Report
Quarantine Japan +81 formatting exceptions before defining a defensible denominator, unknown states and small-cell rules for a WhatsApp Gender and Age report.
Read guideWhatsApp 1 min
Pass This Purpose Test Before an Italy +39 WhatsApp Avatar Check
Use a five-question purpose test to decide whether an Italy +39 list truly needs WhatsApp avatar data and control visibility, unknowns and CRM use.
Read guideWhatsApp 1 min
Guadeloupe +590 Full Format: Keep Local, French and Visitor Phones Distinct
Separate +590, mainland French and visitor phones in a Guadeloupe business list, then accept WhatsApp Full Format through evidence-based field zones.
Read guideFrequently asked questions
Which upload format is supported?
The current workflow accepts TXT files. Use one normalized phone number per line.
Where can I confirm currently supported fields?
Check the WhatsApp product page and signed-in dashboard for live task types, fields and credit usage.
