Find active numbers
Identify which numbers in your file are actually on WhatsApp, so nobody wastes effort on unreachable contacts.
Active number check
CSV in, CSV out
Check Which Numbers Are Active on WhatsApp
Import a list, validate it, and export clean active and inactive files before outreach. One job, done properly — so your team stops spending time on contacts that were never reachable.
+44 7400 000123Checked from imported list
Active+971 55 000 4412Formatted with country code
Queued+1 415 000 8821Separated into inactive output
Inactive3steps end to end
2files exported
200+countries supported
0manual checking
What it does
One clear job, done well
This page is for people who want a checker, so it explains the validation job rather than repeating the product sales pitch.
Clean before outreach
Use the active and inactive outputs to build campaign segments, suppression lists and follow-up files.
Format correctly first
Prepare numbers with country codes and remove duplicates — that alone improves the quality of every result.
Workflow
Simple enough for daily list cleaning
Import your list
Paste numbers or load a file. One number per line, full international format with the country dial code.
Run the checker
Validation runs through the tool and separates contacts that are reachable on WhatsApp from those that are not.
Export both files
Take the active file into your campaign and keep the inactive file as a permanent suppression list.
Keep the inactive file. Teams routinely delete it, then re-buy the same numbers months later and pay to check them all over again.
Who uses it
Built for list-heavy teams
Marketing teams
Clean the segment before a send so budget goes to contacts that can actually receive the message.
Agencies
Validate client lists on arrival and report list quality back before any campaign is planned.
Call centers
Know which contacts are reachable on WhatsApp before agents start working a queue.
Sales teams
Check a prospect list once, then route the unreachable half to email or phone instead.
Go deeper
The detail, if you want it
How do I check which numbers are on WhatsApp?
Export your contacts to a text or CSV file in full international format (for example +447400000123), load the file into WhatsPro Turbo Filter, and run the check. It marks each number as active or inactive on WhatsApp, and you export the active ones as a clean list.
How to prepare a file that validates cleanly
Most poor results trace back to the input file rather than the checker. Before you run anything:
- Use full international format with the country dial code —
+447400000123. - Drop the national trunk prefix, usually a leading zero. Italy, Spain, India, Mexico and Poland do not use one.
- One number per line, nothing else in the column — no names, no “call after 6pm”.
- Remove duplicates after normalising, or you will miss ones written two different ways.
The country reference has the rule and a worked example for each market.
Checking vs validating — which do you need?
Checking answers one question: is this number on WhatsApp? That is what this page covers, and for a single clean list it is usually enough.
Validating is the wider data-quality job around it: normalising formats, rejecting impossible numbers, deduplicating, and recording when each contact was last verified so you know when a segment goes stale.
If the same list gets reused across campaigns, you want the validator workflow. If you are cleaning one file once, the checker is the right tool.
Does a clean list improve delivery?
It improves list quality, which removes one large source of waste. It does not by itself improve delivery.
You still need consent, a compliant sending method, a warmed sender and messaging people actually want. Validation makes sure you are not paying to contact people who were never reachable — it is not a substitute for campaign strategy, and it does not create a lawful basis to contact anyone. See our terms and privacy policy.
What if my WhatsApp account keeps getting restricted?
The desktop checker works through a logged-in WhatsApp session, so a high volume of checks can trigger WhatsApp’s automated limits on that account.
Longer intervals, warmed numbers and a multi-account setup reduce how often this happens. If you want it gone entirely, cloud checking runs server-side with no account involved at all.
Quick answers
Frequently asked
What is a WhatsApp number checker?
It checks whether phone numbers in a list are active on WhatsApp and separates active contacts from inactive ones.
Can I check one by one as well as in bulk?
The workflow is built for bulk checking, but smaller test lists can be validated first before you commit to a larger job.
What should I prepare before checking?
Country codes on every number, duplicates removed, and one number per line. That gives the cleanest output.
Can I check without using my WhatsApp account?
Yes — cloud checking runs with no login, QR scan or linked device, so no account of yours is used or at risk.
Start with the checker, scale when the list grows
Send us your use case and list size and we will point you at the right option instead of the expensive one.
Related pages
Bulk Checker
For larger lists, batching strategy and export-ready segments.
Number Validator
Normalise, verify and segment — CRM-grade data hygiene.
Checking Without Login
No account, no QR scan, no ban risk.
Check By Country
Dial codes and formatting rules per market.
Filter Software
The desktop product page and licensing detail.
How To Filter
Step-by-step tutorial with the common mistakes to avoid.