01
Upload your list
Import CSV or TXT files with phone number data, then confirm the task settings before processing.
Number Active Checker
Measure phone number activity at scale.
Price (per 10,000 numbers) $6.5 USD
Assess phone number activity level using big-data analytics combined with device, carrier, and internet-behavior signals. Our Number Active Checker helps you prioritize active numbers, improve SMS delivery success rates, and reduce operational costs.
Measure phone number activity at scale.
Price (per 10,000 numbers) $6.5 USD
Assess phone number activity level using big-data analytics combined with device, carrier, and internet-behavior signals. Our Number Active Checker helps you prioritize active numbers, improve SMS delivery success rates, and reduce operational costs.
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.
- Activity Scoring: Gauge how active each phone number is using big-data analytics.
- Higher Deliverability: Focus on active numbers to boost SMS success rates.
- Cost Reduction: Stop spending on dormant or inactive numbers.
- Multi-Signal Analysis: Combines device, carrier, and internet-behavior data for accuracy.
Detection signals
What Number Active Checker detects
Number Active Checker uses big-data analytics combined with device, carrier, and internet behaviour signals to detect the activity level of phone numbers, without messaging or storing the number. Every row comes back with an active, inactive, or unknown verdict.
Activity level
Returns whether each number is active, inactive, or unknown based on device, carrier, and internet behaviour signals — not tied to any single platform's registration status.
Bulk verdict
Every number comes back with a clear activity result, ready to filter and segment before campaigns.
Passive, no contact
Reads big-data activity signals only. The number holder is never messaged, logged in to, or notified.
Workflow
How Number Active Checker works
Use Number Active 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 Number Active 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 Number Active Checker with related products
Explore checks that teams often run before or after this product.
Phone Number Validation
Validate numbering format, line type, and reachability signals before platform-specific checks
High-value Users Checker
Identify high-value phone users via big-data signals for better targeting and prioritization
iMessage Checker
iMessage account verification
RCS Checker
RCS/Google Messages account verification
FAQ
Number Active Checker questions
Can I check phone numbers in bulk? +
Yes. Upload a CSV of phone numbers or call the REST API, then download a result file with an active, inactive, or unknown 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 big-data activity signals only. Nothing is sent to the number, and the number holder is never contacted or notified.
How is this different from a platform-specific registration checker? +
This checker measures general phone number activity level using big-data, device, carrier, and internet signals — it does not check registration on any single app. Use platform-specific checkers like Telegram Checker or WhatsApp Checker to confirm registration on a particular service.
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 Number Active 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%
Learn how it workscommission per recharge
