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Phone Verification

Confirm your customers
are actually human.

Real-time phone validation that catches burner numbers, VoIP fraud, and SIM swap risk before a fake account ever reaches your platform. One API call, every carrier, every country.

240+

Countries

Instant

Verification

VoIP

Detection

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Phone Verification verification
Comprehensive Phone Validation

What We Verify

Complete phone number validation and fraud risk assessment

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Number Validity & Format

Confirm phone numbers are properly formatted, valid for their country code, and recognized by telecommunications systems. Catch typos, fake numbers, and malformed entries.

Line Type Identification

Identify whether the number is landline, mobile, VoIP, toll-free, premium rate, or other line types. Line type affects reachability, verification method, and fraud risk.

Carrier Information

Identify the telecommunications carrier and network associated with the number. Carrier data reveals number portability, risk profiles, and connection quality.

Active Status

Verify the number is currently active and in service - not disconnected, suspended, or out of service. Eliminates wasted communication attempts to dead numbers.

Reachability Testing

Confirm the number can actually receive calls or SMS messages. Some numbers exist but can't receive verification codes or communications.

Risk Assessment

Score phone numbers for fraud risk based on line type, history, usage patterns, and association with fraudulent activity. High-risk numbers get flagged before they cause problems.

Phone Verification Process

Real-time validation and optional SMS verification
Submit Phone Number

Provide phone number and country code for verification

Validate Format & Carrier

Check format validity, identify carrier, detect VoIP/burner services

Assess Active Status & Risk

Verify number is active and calculate fraud risk score

Optional SMS Verification

Send verification code to confirm phone ownership (optional)

Why Phone Verification Matters

Why Phone Verification Is Essential

Security, fraud prevention, and communication reliability

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Account Security & 2FA

Two-factor authentication requires working phone numbers. Verify numbers before sending SMS codes. Ensure security mechanisms actually work.

Fraud Prevention

Fraudsters use VoIP numbers, temporary phones, and stolen numbers. Phone verification catches high-risk numbers before fraudulent accounts are created.

Reduce SMS Costs

Sending verification codes to invalid, disconnected, or VoIP numbers wastes money. Verify numbers before sending costly SMS messages.

Customer Communication

Marketing, support, and transaction notifications require working phone numbers. Verification ensures messages reach customers.

KYC/AML Compliance

Financial institutions must verify customer contact information including phone numbers. Phone verification satisfies regulatory requirements.

Chargeback Prevention

E-commerce fraud often involves fake phone numbers. Verifying customer phone numbers reduces fraudulent transactions and chargebacks.

Fraud Risk Detection

VoIP & Burner Phone Detection

Identify high-risk disposable phone numbers

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VoIP Service Detection

Identify VoIP and VoIP-based numbers from services like Google Voice, Skype, and other internet phone services.

Burner Phone Services

Flag burner phone applications and temporary number services that let fraudsters create unlimited disposable numbers.

Risk Scoring

Score numbers based on line type (VoIP higher risk than mobile), number age (new numbers riskier), carrier reputation, and fraud database associations.

Custom Controls

Choose to block VoIP entirely, flag for manual review, or accept with higher scrutiny. Configure risk thresholds based on your fraud tolerance.

Industry Applications

Use Cases Across Industries

Phone verification strengthens security and reduces fraud across sectors

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Account Registration

Verify phone numbers during signup to prevent fake accounts and ensure 2FA works.

Transaction Security

Confirm phone numbers before processing high-value transactions or payments.

SMS Marketing

Clean phone lists before campaigns to reduce costs and improve delivery rates.

E-Commerce Checkout

Verify customer phone numbers to reduce fraud and ensure order communication.

Lending Applications

Confirm applicant phone numbers for contact verification and fraud prevention.

Appointment Scheduling

Verify patient or customer phone numbers before sending appointment reminders.

Flexible Verification Options

Real-Time vs Batch Verification

Choose the verification approach that fits your workflow

Real-Time Verification

  • Instant API calls during signup

  • Millisecond response times

  • Immediate accept/reject decisions

  • Integration into registration flows

  • Per-verification API pricing

  • Ideal for registration and checkout

Batch Verification

  • Upload phone lists for bulk processing

  • Clean marketing lists

  • Validate customer databases

  • Process typically within hours

  • Append additional data

  • Ideal for list hygiene

Enhanced Verification

Phone Verification + SMS OTP

Two-factor approach for complete phone ownership proof

Verify Number Validity

First step: Verify number is valid, active, and low-risk using our database checks.

Send SMS Code

Second step: Send SMS verification code to the number for user entry.

Confirm Ownership

User enters code to prove possession of the phone number and control.

Choose Your Verification Approach

Basic Validation vs SMS Confirmation

Different verification depths for different security needs

Number Validation Only

  • Format and validity check

  • Carrier identification

  • Active status verification

  • VoIP/burner detection

  • Risk scoring

  • Fast and cost-effective

With SMS Confirmation

  • All validation checks

  • SMS code delivery

  • User code entry confirmation

  • Proof of phone ownership

  • Complete security verification

  • Higher confidence level

Trusted & Certified

Built to meet the world's most demanding security and privacy standards.

SOC 2 Type II
SOC 2 Type II

Audited security controls for data protection

GDPR Compliant
GDPR Compliant

Full compliance with EU data privacy regulations

ISO 27001
ISO 27001

International standard for information security

DIACC Member
DIACC Member

Digital ID & Authentication Council of Canada

Developer SDK

Ship Verification in Hours, Not Weeks

Our SDK gives you pre-built UI components, server-side libraries, and a sandbox environment so you can go from zero to live verification in a single sprint.

Read the DocsGet API Keys
verification.ts
import { DeepIDV } from '@deepidv/sdk';

const client = new DeepIDV({
  apiKey: process.env.DEEPIDV_API_KEY,
});

const verification = await client.verify({
  type: 'identity',
  checks: ['id-document', 'liveness', 'face-match'],
  webhookUrl: 'https://yourapp.com/webhooks',
});

// verification.url → send to your user
// verification.id → track the session

Client SDKs

Native SDKs for iOS, Android, and Web with drop-in UI components for ID capture, liveness, and document upload.

Server SDKs

Node.js, Python, and Go libraries to manage verifications, retrieve results, and configure workflows programmatically.

Sandbox Environment

Full-featured test environment with simulated ID documents, mock biometrics, and instant webhook delivery for rapid development.

Modular Architecture

Pick only the modules you need — ID verification, liveness, e-signatures, document management — and compose custom flows.

Confirm Every Number

Experience the Difference

See how deepidv phone verification can secure your platform - it takes 60 seconds.

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Frequently asked questions

deepidv verifies landline, mobile, VoIP, toll-free, and premium-rate numbers across 240+ countries. For each number we return format validity, line type, carrier, active status, reachability, and a fraud risk score.

We identify VoIP and temporary number services (Google Voice, Skype, burner apps, etc.) using up-to-date carrier and line-type data. You can choose to block, flag, or accept VoIP numbers based on your fraud tolerance.

No. Basic validation — format, carrier, line type, active status, and risk — runs without sending an SMS. Adding SMS OTP on top provides proof of ownership when you need a stronger guarantee.

Yes. In addition to real-time API calls, deepidv supports batch verification for list hygiene — upload phone lists to validate customer databases, clean marketing lists, and append additional data.

Financial institutions and regulated businesses must verify customer contact information. deepidv's phone verification provides the audit trail, risk scoring, and reachability data required to satisfy KYC/AML obligations.

Still have questions?

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