CheckNumber.AI 
Messenger Checker
messenger $2.8 per 10,000 checks
- Core data available
- number, activated
- Best for
- Chatbot and automation list cleaning
No-code CSV REST API Exportable results
Verify Facebook Messenger Registration
Check whether a phone number is registered on Facebook Messenger.
Messenger runs as Meta's standalone chat app — many people keep it installed and reachable even when they rarely open Facebook itself, which makes Messenger registration a distinct signal from a Facebook account. CheckNumber's Messenger checker confirms whether a phone number holds a registered Messenger account, so support and marketing teams can size a Messenger-reachable audience or clean a contact list before building automation flows, without ever sending anything to the number.
E.164
Phone input
$2.8
Per 10,000 checks
CSV + API
Workflow
Submitted number +1650••••3421
Messenger status yes / no
Messenger Checker No account, number, or SIM required
Every check runs through official platform APIs on our own infrastructure. You never connect, bind, or use your own account, phone number, or SIM card — just upload your list or call the API and get results.
What CheckNumber detects for Messenger
Messenger account by phone
Confirms whether a phone number has a registered Messenger account (yes or no).
Automation-ready segment
Every number in a Messenger batch returns a registered or not-registered result for building a chatbot-ready segment.
Passive, no contact
Reads the Messenger registration signal only — the account is never messaged, logged in to, or notified.
What You Can Check
A focused Messenger registration check
Use the Messenger task when the required output is a row-level Messenger-registration signal mapped to each submitted E.164 phone number.
| Messenger product | Task type | Input | Core data available | Best for | Current price |
|---|---|---|---|---|---|
| Messenger Checker API documentation | messenger | Phone numbers in E.164 format | number, activated | Chatbot and automation list cleaning | $2.8 per 10,000 checks |
Core Messenger data
What the Messenger task returns
The result file maps one row to each submitted number with the fields below.
Registration
messenger - Number
- The phone number supplied for the check, in E.164 format.
- messenger
- Whether the number is registered on Facebook Messenger (yes or no).
The messenger field is a boolean signal only — it does not include contact lists, message history, or other profile details.
Run a Messenger batch in three steps
Use the no-code platform for uploaded lists or the REST API for recurring workflows.
- 1
Prepare E.164 numbers
Provide one international phone number per row with country code.
- 2
Create the messenger task
Upload the file or call the API with task_type set to messenger.
- 3
Export mapped rows
Download the completed file and match each result to its source number.
Common Use Case
Improve Messenger list quality before outreach
Clean lists before Messenger-based marketing or support outreach.
No-code CSV REST API Exportable results
Signal 1
Standalone-app signal — confirm in bulk which numbers hold a registered Messenger account, independent of Facebook usage.
Signal 2
Cleaner automation lists — keep only real Messenger users before building chatbot or support-outreach flows.
Signal 3
Privacy-safe — a passive check that never messages, logs in, or notifies the account holder.
Messenger FAQ
Can I check phone numbers against Messenger in bulk?
Yes. Upload a CSV of up to hundreds of thousands of numbers or call the REST API, then download one registered or not-registered result per number. You are billed only for successful checks.
Is a Messenger account the same as a Facebook account?
Not necessarily. Messenger can run as a standalone app, so a number can be Messenger-registered even when the person rarely uses Facebook itself. The check reports Messenger registration specifically, not general Facebook activity.
Does the check contact or notify the person?
No. The check is passive and reads registration signals only. Nothing is sent to the number, and the account holder is never contacted or notified.
Is there a free trial?
Yes. New accounts receive 1,000 free checks on signup with no credit card, and every check afterward is pay-as-you-go with no monthly fee — top-up credit never expires.
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