01
Upload your list
Import CSV or TXT files with phone number data, then confirm the task settings before processing.
Band Checker
Verify Band account presence by phone number.
Price (per 10,000 numbers) $1 USD
Check which phone numbers are linked to Band accounts. Reach users on Naver’s social platform for campaigns in markets where Band is widely used.
Verify Band account presence by phone number.
Price (per 10,000 numbers) $1 USD
Check which phone numbers are linked to Band accounts. Reach users on Naver’s social platform for campaigns in markets where Band is widely used.
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.
- Regional Reach: Identify Band users alongside Line and other Asia-focused channels.
- Phone-Based Check: Validate numbers registered with Band.
- Audience Segmentation: Build lists for messaging and social outreach.
- Multi-Platform Strategy: Combine with Line, Kakao-region, and other regional tools.
Detection signals
What Band Checker detects
BAND, from Korea's Naver, is built for managing groups rather than one-on-one chatting — clubs, sports teams, alumni networks, and fan communities (including K-pop fan groups) rely on it to organize. Band Checker confirms registration status without messaging the number or logging in to any account.
Registration status
Confirms whether the phone number is registered on Band (yes or no), so you can filter out unregistered numbers before outreach.
Group community signal
BAND is used mainly for group management — clubs, sports teams, alumni associations, and fan communities such as K-pop fan groups — so a registered result is more likely tied to organized group activity than to personal one-on-one messaging.
Passive, no contact
Reads registration signals only. The account holder is never messaged, logged in to, or notified.
Workflow
How Band Checker works
Use Band Checker as part of a repeatable list-cleaning workflow before outreach, CRM imports, or audience segmentation.
02
Run the check
NumberChecker.AI processes the file in bulk and returns structured status signals for each row.
03
Export segments
Download results and route clean, matched, unmatched, or review-needed rows into your next workflow.
Outputs
What you can review after the check
number
activated
Use cases
Where teams use Band Checker
List cleaning
Remove unsupported or low-confidence records before campaigns or imports.
Audience segmentation
Create groups based on platform, email, phone, or account-related signals.
Review workflows
Send uncertain or high-value records into a separate internal review queue.
Related checks
Pair Band Checker with related products
Explore checks that teams often run before or after this product.
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iMessage Checker
iMessage account verification
FAQ
Band Checker questions
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 a result file with a registered or not-registered verdict for every number. You are billed only for successful checks.
Does the check message 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.
What kind of accounts does BAND registration typically represent? +
BAND is used mainly for group management rather than personal one-on-one chat — think clubs, sports teams, alumni associations, and fan communities such as K-pop fan groups — so a registered result is more likely tied to group organizing activity.
Is there a free trial? +
Yes. New accounts receive free checks on signup, and every check is pay-as-you-go with no monthly fee.
Ready to run Band Checker at scale?
Compare pricing, review API options, or create an account to upload your first production list.
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%
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