CheckNumber.AI 
Band Checker
band $1 per 10,000 checks
- Core data available
- number, activated
- Best for
- Community and group-list cleaning
No-code CSV REST API Exportable results
Check Band Account Registration
Verify whether a phone number is registered on Band, Naver's social platform.
Band, built by Naver, is a group-communication app widely used by schools, sports teams, workplaces, and community groups to organize members outside of SMS or email. CheckNumber's Band checker confirms whether a phone number holds a registered Band account, helping community organizers or CRM teams clean a contact list or size their reachable audience before a Band-based outreach, without ever messaging the number.
E.164
Phone input
$1
Per 10,000 checks
CSV + API
Workflow
Submitted number +8210••••6789
Band status yes / no
Band 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 Band
Band account by phone
Confirms whether a phone number has a registered Band account (yes or no).
Community list cleanup
Every number in a Band batch returns a registered or not-registered result for community or team list cleanup.
Passive, no contact
Reads the Band registration signal only — the account is never messaged, joined, or notified.
What You Can Check
A focused Band registration check
Use the Band task when the required output is a row-level Band-registration signal mapped to each submitted E.164 phone number.
| Band product | Task type | Input | Core data available | Best for | Current price |
|---|---|---|---|---|---|
| Band Checker API documentation | band | Phone numbers in E.164 format | number, activated | Community and group-list cleaning | $1 per 10,000 checks |
Core Band data
What the Band task returns
The result file maps one row to each submitted number with the fields below.
Registration
band - Number
- The phone number supplied for the check, in E.164 format.
- band
- Whether the number currently has a registered Band account (yes or no).
The band field is a boolean signal only — it does not include group memberships, post history, or other profile details.
Run a Band 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 band task
Upload the file or call the API with task_type set to band.
- 3
Export mapped rows
Download the completed file and match each result to its source number.
Common Use Case
Improve Band list quality before outreach
Qualify leads before Band-based community or marketing outreach.
No-code CSV REST API Exportable results
Signal 1
Community reach check — confirm in bulk which numbers hold a registered Band account.
Signal 2
Cleaner group lists — keep only real Band members before migrating a community or team contact list.
Signal 3
Privacy-safe — a passive check that never messages, joins, or notifies the account holder.
Band FAQ
Can I check phone numbers against Band 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 Band the same as other group chat apps?
Band is Naver's dedicated group-communication app, built around schools, teams, and communities rather than general messaging. The check reports whether a number is registered specifically on Band, not on Naver's other services.
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.
Refer & Earn 10%
Earn 10% Commission on Every Recharge — For Life
Share your unique referral link. When someone signs up through it and tops up their account, you instantly receive 10% of the amount paid as bonus credit — no expiry, no cap.
- 10% commission on every recharge your referrals make
- Bonus credit is applied automatically — no withdrawal steps
- Lifetime referral link — earn forever, not just once
10%
Learn how it workscommission per recharge