Common Account Detection by Mobile Number API – Detect Duplicate Users & Fake Accounts | Social & E-commerce Fraud API
Our Common Account Detection API helps platforms identify multiple user accounts linked to a single mobile number, enabling you to eliminate fake profiles, stop referral abuse, and maintain platform integrity.
Fraud Shield
Duplicate Detection APIIntegrity Analysis
Risk Level
HIGH
Linked Identity Flags
"is_duplicate": true,
"linked_accounts": [
"USR_882x", "USR_991b", "USR_001z"
],
"fraud_probability": 0.92,
"recommendation": "BLOCK"
Node: Global-Fraud-Watch
Advanced Duplicate Account Detection
Eliminate fake users and multi-accounting. Identify common accounts across platforms instantly with our Fraud Prevention API.
1. Input Mobile
Submit a mobile number to cross-reference against global account databases and fraud networks.
2. Pattern Analysis
Our engine detects if the number is linked to multiple active profiles or known "burner" accounts.
3. Fraud Verdict
Receive a risk score to block duplicates and ensure only unique, authentic users enter your ecosystem.
Protecting Your Platform Integrity
Prevent promo abuse, stop social engineering, and secure your e-commerce checkout with real-time common account detection.
Stop Multi-Accounting
Instantly flag users attempting to create multiple profiles using the same verified mobile identity.
Prevent Promo Abuse
Block "bonus hunters" in e-commerce and gaming by ensuring unique mobile number attribution per account.
Identify Fake Profiles
Detect bot-generated or synthetic identities by analyzing account history and commonality markers.
Global Risk Intelligence
Leverage a global database of known fraudulent numbers and high-risk mobile carriers.
Scalable Fraud Filtering
Easily integrate our REST API into your registration flow for low-latency fraud screening.
Reduce Chargebacks
E-commerce platforms can lower transaction risk by identifying numbers linked to previous fraud attempts.
Real-time Trust Scoring
Automatically assign trust levels to users based on mobile carrier data and account age.
Encrypted Data Handling
Secure verification while maintaining compliance with international data privacy regulations.
Seamless UX
Protect your platform behind the scenes without introducing friction for legitimate new customers.
Enhanced Detection Capabilities
Our Common Account API provides deep insights into mobile identities to prevent social and e-commerce fraud at the source.
Duplicate Detection
Cross-check mobile numbers across your platform to find linked accounts and prevent unauthorized secondary registrations.
Social Network Mapping
Determine if a mobile number is active on major social platforms to confirm the user has a real digital footprint.
SIM-Swap & VOIP Detection
Identify high-risk virtual numbers or recent SIM changes that are often indicators of takeover or bot activity.
Where Can You Use Common Account API?
Detecting duplicate users and fake accounts is critical for digital integrity in India. Our API powers fraud prevention and secure user identification for high-growth E-commerce and Social platforms.
Integrate Duplicate Detection in Minutes
Seamlessly identify fake accounts with real-time analysis. Fully documented SDKs for Node.js, PHP, Python, and Java.
curl --request POST \
--url https://api.idspay.in/v3/account/detect \
--header 'Authorization: Bearer YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
"mobile_number": "919876543210",
"check_type": "DUPLICATE_SCAN",
"platform_id": "ECOMM_PROMO_SAFE"
}'{
"status": "SUCCESS",
"data": {
"scan_id": "scan_928k01",
"duplicate_found": false,
"risk_score": 0.05,
"account_age": "3+ Years",
"common_account_flag": true,
"identity_verified": true
}
}🔐 Key Features of Fraud Detection API
Secure your user lifecycle with high-speed account validation and robust fraud detection infrastructure built for global scale.
Real-time Scanning
Instant duplicate detection across millions of records with sub-200ms latency.
Fake User Prevention
Identify and block bot-created profiles and disposable mobile numbers instantly.
Risk Scoring Logic
Intelligent risk flags based on account commonality and social footprint markers.
Cross-Platform Data
Verify if a number is linked to legitimate profiles across major digital services.
Secure Lookup
Privacy-first hashing ensures user data remains secure during detection checks.
Enterprise Scalability
Engineered to handle massive traffic spikes during sales and marketing campaigns.
99.9% Uptime
Redundant server clusters ensure your fraud screening is always active.
Smart Routing
Localized data centers in India for ultra-fast response times and reliability.
How Duplicate Detection Works
Identify and flag common accounts across platforms in real-time through our high-speed analysis infrastructure.
Input Data
Submit the mobile number or user identifier to our secure API endpoint.
Cross-Reference
Our engine cross-checks the data against global platform markers and digital footprints.
Risk Assessment
The API analyzes account age, activity history, and commonality patterns instantly.
Verdict & Score
Receive a risk score and "Common Account" flag to decide whether to allow or block.
Protect Your Margins with Common Account API
Our Common Account Detection API is engineered to help platforms instantly verify if a mobile number is a duplicate or part of a bot farm, ensuring secure onboarding and preventing promo abuse.
To improve marketing ROI and filter fraudulent leads, businesses require a robust Identity Verification API that provides deep data insights through privacy-first queries. This solution is ideal for high-stakes E-commerce, Fintech, and Gaming platforms.
Whether you are scrubbing user lists, identifying serial refunders, or securing your signup flow, this Anti-Fraud Gateway delivers unmatched accuracy and low-latency performance.
Why IDSPay is Better than Other Fake Account Detection APIs?
See how we outperform the industry standards.
Faster Response
Lower latency and faster data retrieval than competitors.
Superior Uptime
More reliable service stability than Eko & API Mall.
Cleaner Docs
Easier to read and implement compared to Digitap.
Affordable Pricing
Cost-effective plans tailored for growing startups.
Dedicated Support
Real human experts ready to help you with any integration hurdles 24/7.
Why We Are The Better Choice
Compare our performance and see why top fintechs trust our infrastructure.
| Feature | 🚀 Our API | Other Providers |
|---|---|---|
| Accuracy |
99.9% (Govt. Direct)
|
~85-90% (Scraped)
|
| Speed |
< 500ms
|
2 - 5 Seconds
|
| Pricing |
Pay-per-use (No Fixed Fee)
|
High Monthly Commitment
|
| Support |
24/7 Priority Support
|
Email-only (48hr TAT)
|
* Based on internal benchmark tests and competitor analysis (April 2026).
Frequently Asked Questions
Common developer queries about integrating the Common Account Detection API.
1. What is the Common Account Detection API?
The Common Account Detection API is a security tool that identifies if a phone number or user identity is associated with "common" or high-risk profiles—such as known duplicate accounts, bot-generated IDs, or recycled numbers used for promotional abuse.
2. How does it help prevent fraud?
By cross-referencing global digital footprints, the API flags entities that appear across multiple platforms under suspicious circumstances, helping you block serial refunders and multi-accounting before they impact your margins.
3. What data does the API return?
It provides a risk score (0-100), a "commonality" flag, and metadata regarding the account's history, such as its first-seen date and presence on high-risk global databases.
4. How fast are the analysis results?
Our high-speed infrastructure ensures a response time of less than 200ms, making it fast enough to be integrated directly into your registration or checkout button-click event.
5. Is it compliant with global data laws?
Yes. We use anonymized hashing and privacy-first query methods. We do not store your users' personal data, ensuring full compliance with GDPR, CCPA, and other regional privacy regulations.
6. Can I process legacy databases in bulk?
Certainly. The API supports batch processing for database scrubbing, allowing you to clean millions of records to identify and remove duplicate or fraudulent users from your existing systems.
7. What happens if a number is flagged?
The decision is yours. You can choose to block the request, trigger additional 2FA (Two-Factor Authentication), or flag the account for manual review within your own admin dashboard.
8. Does it detect virtual or VoIP numbers?
Yes, our engine specifically identifies non-fixed VoIP and virtual numbers often used to create temporary "common" accounts for automated attacks or fake signups.
9. Which languages are supported?
We provide SDKs and code snippets for all major languages, including Node.js, Python, Ruby, Java, and C#, ensuring you can deploy the protection in minutes.
10. How do I get started?
Simply sign up for an API key on our developer portal. We offer a free tier with complimentary credits so you can test the accuracy of our detection engine in your production environment.